cpython-lru_cache-weakref: Objects/floatobject.c annotate

annotate Objects/floatobject.c @ 48178:cf331fef3293 legacy-trunk

Silence warnings under -3 triggered by wsgiref.

author	Brett Cannon <bcannon@gmail.com>
date	Mon, 04 Aug 2008 21:30:53 +0000
parents	97ba936e8df8
children	e39d44adb618

rev	line source
145 853b736a6a9e Added copyright notice. Guido van Rossum <guido@python.org> parents: 91 diff changeset	1
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	2 /* Float object implementation */
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	3
27 82c7bab78bb1 New errors. Guido van Rossum <guido@python.org> parents: 6 diff changeset	4 /* XXX There should be overflow checks here, but it's hard to check
82c7bab78bb1 New errors. Guido van Rossum <guido@python.org> parents: 6 diff changeset	5 for any kind of float exception without losing portability. */
82c7bab78bb1 New errors. Guido van Rossum <guido@python.org> parents: 6 diff changeset	6
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	7 #include "Python.h"
44670 d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	8 #include "structseq.h"
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	9
86 a6934380c6e7 "Compiling" version Guido van Rossum <guido@python.org> parents: 60 diff changeset	10 #include <ctype.h>
44085 c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	11 #include <float.h>
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	12
47966 97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	13 #undef MAX
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	14 #undef MIN
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	15 #define MAX(x, y) ((x) < (y) ? (y) : (x))
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	16 #define MIN(x, y) ((x) < (y) ? (x) : (y))
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	17
46154 1e10b30f7498 Fix compiler warning about finite() missing on Solaris. Neal Norwitz <nnorwitz@gmail.com> parents: 46135 diff changeset	18 #ifdef HAVE_IEEEFP_H
1e10b30f7498 Fix compiler warning about finite() missing on Solaris. Neal Norwitz <nnorwitz@gmail.com> parents: 46135 diff changeset	19 #include <ieeefp.h>
1e10b30f7498 Fix compiler warning about finite() missing on Solaris. Neal Norwitz <nnorwitz@gmail.com> parents: 46135 diff changeset	20 #endif
1e10b30f7498 Fix compiler warning about finite() missing on Solaris. Neal Norwitz <nnorwitz@gmail.com> parents: 46135 diff changeset	21
44940 12099143724f Add prototypes to get the mathmodule.c to compile on OSF1 5.1 (Tru64) Neal Norwitz <nnorwitz@gmail.com> parents: 44670 diff changeset	22 #ifdef _OSF_SOURCE
12099143724f Add prototypes to get the mathmodule.c to compile on OSF1 5.1 (Tru64) Neal Norwitz <nnorwitz@gmail.com> parents: 44670 diff changeset	23 /* OSF1 5.1 doesn't make this available with XOPEN_SOURCE_EXTENDED defined */
12099143724f Add prototypes to get the mathmodule.c to compile on OSF1 5.1 (Tru64) Neal Norwitz <nnorwitz@gmail.com> parents: 44670 diff changeset	24 extern int finite(double);
12099143724f Add prototypes to get the mathmodule.c to compile on OSF1 5.1 (Tru64) Neal Norwitz <nnorwitz@gmail.com> parents: 44670 diff changeset	25 #endif
12099143724f Add prototypes to get the mathmodule.c to compile on OSF1 5.1 (Tru64) Neal Norwitz <nnorwitz@gmail.com> parents: 44670 diff changeset	26
5504 c88b9b868995 Faster floating point allocator, same idea as the int allocator. Guido van Rossum <guido@python.org> parents: 5396 diff changeset	27 /* Special free list -- see comments for same code in intobject.c. */
c88b9b868995 Faster floating point allocator, same idea as the int allocator. Guido van Rossum <guido@python.org> parents: 5396 diff changeset	28 #define BLOCK_SIZE 1000 /* 1K less typical malloc overhead */
10391 7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	29 #define BHEAD_SIZE 8 /* Enough for a 64-bit pointer */
10382 e2a08a81e56f OK, try again. Vladimir gave me a fix for the alignment bus error, Guido van Rossum <guido@python.org> parents: 10375 diff changeset	30 #define N_FLOATOBJECTS ((BLOCK_SIZE - BHEAD_SIZE) / sizeof(PyFloatObject))
10391 7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	31
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	32 struct _floatblock {
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	33 struct _floatblock *next;
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	34 PyFloatObject objects[N_FLOATOBJECTS];
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	35 };
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	36
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	37 typedef struct _floatblock PyFloatBlock;
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	38
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	39 static PyFloatBlock *block_list = NULL;
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	40 static PyFloatObject *free_list = NULL;
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	41
5504 c88b9b868995 Faster floating point allocator, same idea as the int allocator. Guido van Rossum <guido@python.org> parents: 5396 diff changeset	42 static PyFloatObject *
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	43 fill_free_list(void)
5504 c88b9b868995 Faster floating point allocator, same idea as the int allocator. Guido van Rossum <guido@python.org> parents: 5396 diff changeset	44 {
c88b9b868995 Faster floating point allocator, same idea as the int allocator. Guido van Rossum <guido@python.org> parents: 5396 diff changeset	45 PyFloatObject p, q;
12576 1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring. Guido van Rossum <guido@python.org> parents: 12248 diff changeset	46 /* XXX Float blocks escape the object heap. Use PyObject_MALLOC ??? */
1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring. Guido van Rossum <guido@python.org> parents: 12248 diff changeset	47 p = (PyFloatObject *) PyMem_MALLOC(sizeof(PyFloatBlock));
5504 c88b9b868995 Faster floating point allocator, same idea as the int allocator. Guido van Rossum <guido@python.org> parents: 5396 diff changeset	48 if (p == NULL)
12576 1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring. Guido van Rossum <guido@python.org> parents: 12248 diff changeset	49 return (PyFloatObject *) PyErr_NoMemory();
10391 7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	50 ((PyFloatBlock *)p)->next = block_list;
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	51 block_list = (PyFloatBlock *)p;
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	52 p = &((PyFloatBlock *)p)->objects[0];
5504 c88b9b868995 Faster floating point allocator, same idea as the int allocator. Guido van Rossum <guido@python.org> parents: 5396 diff changeset	53 q = p + N_FLOATOBJECTS;
c88b9b868995 Faster floating point allocator, same idea as the int allocator. Guido van Rossum <guido@python.org> parents: 5396 diff changeset	54 while (--q > p)
44350 26384b8180c7 #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, Py_TYPE and Py_REFCNT. Macros for b/w compatibility are available. Christian Heimes <christian@cheimes.de> parents: 44344 diff changeset	55 Py_TYPE(q) = (struct _typeobject *)(q-1);
26384b8180c7 #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, Py_TYPE and Py_REFCNT. Macros for b/w compatibility are available. Christian Heimes <christian@cheimes.de> parents: 44344 diff changeset	56 Py_TYPE(q) = NULL;
5504 c88b9b868995 Faster floating point allocator, same idea as the int allocator. Guido van Rossum <guido@python.org> parents: 5396 diff changeset	57 return p + N_FLOATOBJECTS - 1;
c88b9b868995 Faster floating point allocator, same idea as the int allocator. Guido van Rossum <guido@python.org> parents: 5396 diff changeset	58 }
c88b9b868995 Faster floating point allocator, same idea as the int allocator. Guido van Rossum <guido@python.org> parents: 5396 diff changeset	59
44085 c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	60 double
c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	61 PyFloat_GetMax(void)
c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	62 {
c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	63 return DBL_MAX;
c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	64 }
c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	65
c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	66 double
c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	67 PyFloat_GetMin(void)
c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	68 {
c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	69 return DBL_MIN;
c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	70 }
c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	71
45060 c05ee77b39f2 The previous change was causing a segfault after multiple calls to Py_Initialize() and Py_Finalize(). Christian Heimes <christian@cheimes.de> parents: 45059 diff changeset	72 static PyTypeObject FloatInfoType = {0, 0, 0, 0, 0, 0};
44670 d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	73
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	74 PyDoc_STRVAR(floatinfo__doc__,
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	75 "sys.floatinfo\n\
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	76 \n\
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	77 A structseq holding information about the float type. It contains low level\n\
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	78 information about the precision and internal representation. Please study\n\
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	79 your system's :file:`float.h` for more information.");
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	80
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	81 static PyStructSequence_Field floatinfo_fields[] = {
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	82 {"max", "DBL_MAX -- maximum representable finite float"},
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	83 {"max_exp", "DBL_MAX_EXP -- maximum int e such that radix**(e-1) "
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	84 "is representable"},
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	85 {"max_10_exp", "DBL_MAX_10_EXP -- maximum int e such that 10**e "
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	86 "is representable"},
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	87 {"min", "DBL_MIN -- Minimum positive normalizer float"},
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	88 {"min_exp", "DBL_MIN_EXP -- minimum int e such that radix**(e-1) "
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	89 "is a normalized float"},
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	90 {"min_10_exp", "DBL_MIN_10_EXP -- minimum int e such that 10**e is "
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	91 "a normalized"},
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	92 {"dig", "DBL_DIG -- digits"},
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	93 {"mant_dig", "DBL_MANT_DIG -- mantissa digits"},
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	94 {"epsilon", "DBL_EPSILON -- Difference between 1 and the next "
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	95 "representable float"},
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	96 {"radix", "FLT_RADIX -- radix of exponent"},
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	97 {"rounds", "FLT_ROUNDS -- addition rounds"},
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	98 {0}
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	99 };
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	100
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	101 static PyStructSequence_Desc floatinfo_desc = {
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	102 "sys.floatinfo", /* name */
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	103 floatinfo__doc__, /* doc */
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	104 floatinfo_fields, /* fields */
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	105 11
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	106 };
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	107
44085 c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	108 PyObject *
c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	109 PyFloat_GetInfo(void)
c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	110 {
45060 c05ee77b39f2 The previous change was causing a segfault after multiple calls to Py_Initialize() and Py_Finalize(). Christian Heimes <christian@cheimes.de> parents: 45059 diff changeset	111 PyObject* floatinfo;
44670 d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	112 int pos = 0;
44085 c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	113
44670 d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	114 floatinfo = PyStructSequence_New(&FloatInfoType);
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	115 if (floatinfo == NULL) {
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	116 return NULL;
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	117 }
44085 c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	118
44670 d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	119 #define SetIntFlag(flag) \
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	120 PyStructSequence_SET_ITEM(floatinfo, pos++, PyInt_FromLong(flag))
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	121 #define SetDblFlag(flag) \
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	122 PyStructSequence_SET_ITEM(floatinfo, pos++, PyFloat_FromDouble(flag))
44085 c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	123
44670 d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	124 SetDblFlag(DBL_MAX);
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	125 SetIntFlag(DBL_MAX_EXP);
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	126 SetIntFlag(DBL_MAX_10_EXP);
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	127 SetDblFlag(DBL_MIN);
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	128 SetIntFlag(DBL_MIN_EXP);
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	129 SetIntFlag(DBL_MIN_10_EXP);
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	130 SetIntFlag(DBL_DIG);
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	131 SetIntFlag(DBL_MANT_DIG);
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	132 SetDblFlag(DBL_EPSILON);
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	133 SetIntFlag(FLT_RADIX);
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	134 SetIntFlag(FLT_ROUNDS);
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	135 #undef SetIntFlag
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	136 #undef SetDblFlag
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	137
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	138 if (PyErr_Occurred()) {
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	139 Py_CLEAR(floatinfo);
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	140 return NULL;
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	141 }
d66e5837aa57 Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's Christian Heimes <christian@cheimes.de> parents: 44488 diff changeset	142 return floatinfo;
44085 c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	143 }
c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	144
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	145 PyObject *
d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	146 PyFloat_FromDouble(double fval)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	147 {
5504 c88b9b868995 Faster floating point allocator, same idea as the int allocator. Guido van Rossum <guido@python.org> parents: 5396 diff changeset	148 register PyFloatObject *op;
c88b9b868995 Faster floating point allocator, same idea as the int allocator. Guido van Rossum <guido@python.org> parents: 5396 diff changeset	149 if (free_list == NULL) {
c88b9b868995 Faster floating point allocator, same idea as the int allocator. Guido van Rossum <guido@python.org> parents: 5396 diff changeset	150 if ((free_list = fill_free_list()) == NULL)
c88b9b868995 Faster floating point allocator, same idea as the int allocator. Guido van Rossum <guido@python.org> parents: 5396 diff changeset	151 return NULL;
c88b9b868995 Faster floating point allocator, same idea as the int allocator. Guido van Rossum <guido@python.org> parents: 5396 diff changeset	152 }
24898 a869d2de536f Call me anal, but there was a particular phrase that was speading to Guido van Rossum <guido@python.org> parents: 24280 diff changeset	153 /* Inline PyObject_New */
5504 c88b9b868995 Faster floating point allocator, same idea as the int allocator. Guido van Rossum <guido@python.org> parents: 5396 diff changeset	154 op = free_list;
44350 26384b8180c7 #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, Py_TYPE and Py_REFCNT. Macros for b/w compatibility are available. Christian Heimes <christian@cheimes.de> parents: 44344 diff changeset	155 free_list = (PyFloatObject *)Py_TYPE(op);
12576 1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring. Guido van Rossum <guido@python.org> parents: 12248 diff changeset	156 PyObject_INIT(op, &PyFloat_Type);
27 82c7bab78bb1 New errors. Guido van Rossum <guido@python.org> parents: 6 diff changeset	157 op->ob_fval = fval;
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	158 return (PyObject *) op;
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	159 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	160
14783 77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	161 /**************************************************************************
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	162 RED_FLAG 22-Sep-2000 tim
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	163 PyFloat_FromString's pend argument is braindead. Prior to this RED_FLAG,
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	164
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	165 1. If v was a regular string, *pend was set to point to its terminating
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	166 null byte. That's useless (the caller can find that without any
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	167 help from this function!).
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	168
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	169 2. If v was a Unicode string, or an object convertible to a character
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	170 buffer, *pend was set to point into stack trash (the auto temp
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	171 vector holding the character buffer). That was downright dangerous.
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	172
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	173 Since we can't change the interface of a public API function, pend is
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	174 still supported but now officially useless: if pend is not NULL,
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	175 *pend is set to NULL.
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	176 **************************************************************************/
11383 aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	177 PyObject *
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	178 PyFloat_FromString(PyObject v, char *pend)
11383 aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	179 {
44344 1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	180 const char s, last, end, sp;
11383 aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	181 double x;
14783 77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	182 char buffer[256]; /* for errors */
19343 7257e87e0720 Patch #445762: Support --disable-unicode Martin v. Löwis <martin@v.loewis.de> parents: 19051 diff changeset	183 #ifdef Py_USING_UNICODE
14783 77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	184 char s_buffer[256]; /* for objects convertible to a char buffer */
19343 7257e87e0720 Patch #445762: Support --disable-unicode Martin v. Löwis <martin@v.loewis.de> parents: 19051 diff changeset	185 #endif
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36235 diff changeset	186 Py_ssize_t len;
11383 aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	187
14783 77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	188 if (pend)
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	189 *pend = NULL;
47527 52294af4b663 This reverts r63675 based on the discussion in this thread: Gregory P. Smith <greg@mad-scientist.com> parents: 47392 diff changeset	190 if (PyString_Check(v)) {
52294af4b663 This reverts r63675 based on the discussion in this thread: Gregory P. Smith <greg@mad-scientist.com> parents: 47392 diff changeset	191 s = PyString_AS_STRING(v);
52294af4b663 This reverts r63675 based on the discussion in this thread: Gregory P. Smith <greg@mad-scientist.com> parents: 47392 diff changeset	192 len = PyString_GET_SIZE(v);
11969 74b7213fb609 Many changes for Unicode, by Marc-Andre Lemburg. Guido van Rossum <guido@python.org> parents: 11673 diff changeset	193 }
19343 7257e87e0720 Patch #445762: Support --disable-unicode Martin v. Löwis <martin@v.loewis.de> parents: 19051 diff changeset	194 #ifdef Py_USING_UNICODE
12248 70154e2e9c89 Marc-Andre's third try at this bulk patch seems to work (except that Guido van Rossum <guido@python.org> parents: 11969 diff changeset	195 else if (PyUnicode_Check(v)) {
37815 20cb13bdf1f0 C++ compiler cleanup: bunch-o-casts, plus use of unsigned loop index var in a couple places Skip Montanaro <skip@pobox.com> parents: 37589 diff changeset	196 if (PyUnicode_GET_SIZE(v) >= (Py_ssize_t)sizeof(s_buffer)) {
12248 70154e2e9c89 Marc-Andre's third try at this bulk patch seems to work (except that Guido van Rossum <guido@python.org> parents: 11969 diff changeset	197 PyErr_SetString(PyExc_ValueError,
14783 77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	198 "Unicode float() literal too long to convert");
12248 70154e2e9c89 Marc-Andre's third try at this bulk patch seems to work (except that Guido van Rossum <guido@python.org> parents: 11969 diff changeset	199 return NULL;
70154e2e9c89 Marc-Andre's third try at this bulk patch seems to work (except that Guido van Rossum <guido@python.org> parents: 11969 diff changeset	200 }
14783 77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	201 if (PyUnicode_EncodeDecimal(PyUnicode_AS_UNICODE(v),
12248 70154e2e9c89 Marc-Andre's third try at this bulk patch seems to work (except that Guido van Rossum <guido@python.org> parents: 11969 diff changeset	202 PyUnicode_GET_SIZE(v),
20823 c7aa332a2ffa SF bug #477221: abs and divmod act oddly with -0.0. Tim Peters <tim.peters@gmail.com> parents: 20654 diff changeset	203 s_buffer,
12248 70154e2e9c89 Marc-Andre's third try at this bulk patch seems to work (except that Guido van Rossum <guido@python.org> parents: 11969 diff changeset	204 NULL))
70154e2e9c89 Marc-Andre's third try at this bulk patch seems to work (except that Guido van Rossum <guido@python.org> parents: 11969 diff changeset	205 return NULL;
70154e2e9c89 Marc-Andre's third try at this bulk patch seems to work (except that Guido van Rossum <guido@python.org> parents: 11969 diff changeset	206 s = s_buffer;
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36235 diff changeset	207 len = strlen(s);
12248 70154e2e9c89 Marc-Andre's third try at this bulk patch seems to work (except that Guido van Rossum <guido@python.org> parents: 11969 diff changeset	208 }
19343 7257e87e0720 Patch #445762: Support --disable-unicode Martin v. Löwis <martin@v.loewis.de> parents: 19051 diff changeset	209 #endif
11969 74b7213fb609 Many changes for Unicode, by Marc-Andre Lemburg. Guido van Rossum <guido@python.org> parents: 11673 diff changeset	210 else if (PyObject_AsCharBuffer(v, &s, &len)) {
74b7213fb609 Many changes for Unicode, by Marc-Andre Lemburg. Guido van Rossum <guido@python.org> parents: 11673 diff changeset	211 PyErr_SetString(PyExc_TypeError,
23344 bffc7236c4ba clarify message when raising TypeError to indicate that float() accepts Skip Montanaro <skip@pobox.com> parents: 22228 diff changeset	212 "float() argument must be a string or a number");
11383 aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	213 return NULL;
11969 74b7213fb609 Many changes for Unicode, by Marc-Andre Lemburg. Guido van Rossum <guido@python.org> parents: 11673 diff changeset	214 }
11383 aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	215
11969 74b7213fb609 Many changes for Unicode, by Marc-Andre Lemburg. Guido van Rossum <guido@python.org> parents: 11673 diff changeset	216 last = s + len;
11383 aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	217 while (s && isspace(Py_CHARMASK(s)))
aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	218 s++;
14783 77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	219 if (*s == '\0') {
11383 aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	220 PyErr_SetString(PyExc_ValueError, "empty string for float()");
aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	221 return NULL;
aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	222 }
44344 1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	223 sp = s;
14783 77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	224 /* We don't care about overflow or underflow. If the platform supports
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	225 * them, infinities and signed zeroes (on underflow) are fine.
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	226 * However, strtod can return 0 for denormalized numbers, where atof
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	227 * does not. So (alas!) we special-case a zero result. Note that
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	228 * whether strtod sets errno on underflow is not defined, so we can't
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	229 * key off errno.
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	230 */
14851 5449302c4d2e Replace SIGFPE paranoia around strtod and atof. I don't believe these Tim Peters <tim.peters@gmail.com> parents: 14783 diff changeset	231 PyFPE_START_PROTECT("strtod", return NULL)
32305 13656d58d450 Patch #774665: Make Python LC_NUMERIC agnostic. Martin v. Löwis <martin@v.loewis.de> parents: 32150 diff changeset	232 x = PyOS_ascii_strtod(s, (char **)&end);
14851 5449302c4d2e Replace SIGFPE paranoia around strtod and atof. I don't believe these Tim Peters <tim.peters@gmail.com> parents: 14783 diff changeset	233 PyFPE_END_PROTECT(x)
11383 aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	234 errno = 0;
aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	235 /* Believe it or not, Solaris 2.6 can move end beyond the null
14783 77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	236 byte at the end of the string, when the input is inf(inity). */
11383 aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	237 if (end > last)
aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	238 end = last;
44344 1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	239 /* Check for inf and nan. This is done late because it rarely happens. */
14783 77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	240 if (end == s) {
44344 1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	241 char p = (char)sp;
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	242 int sign = 1;
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	243
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	244 if (*p == '-') {
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	245 sign = -1;
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	246 p++;
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	247 }
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	248 if (*p == '+') {
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	249 p++;
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	250 }
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	251 if (PyOS_strnicmp(p, "inf", 4) == 0) {
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	252 Py_RETURN_INF(sign);
44344 1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	253 }
47889 4bf84035cb5f Issue 3188: accept float('infinity') as well as float('inf'). This Mark Dickinson <dickinsm@gmail.com> parents: 47822 diff changeset	254 if (PyOS_strnicmp(p, "infinity", 9) == 0) {
4bf84035cb5f Issue 3188: accept float('infinity') as well as float('inf'). This Mark Dickinson <dickinsm@gmail.com> parents: 47822 diff changeset	255 Py_RETURN_INF(sign);
4bf84035cb5f Issue 3188: accept float('infinity') as well as float('inf'). This Mark Dickinson <dickinsm@gmail.com> parents: 47822 diff changeset	256 }
44344 1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	257 #ifdef Py_NAN
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	258 if(PyOS_strnicmp(p, "nan", 4) == 0) {
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	259 Py_RETURN_NAN;
44344 1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	260 }
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	261 #endif
21079 8cef75cacb01 PyFloat_FromString(): Conversion of sprintf() to PyOS_snprintf() for Barry Warsaw <barry@python.org> parents: 20829 diff changeset	262 PyOS_snprintf(buffer, sizeof(buffer),
8cef75cacb01 PyFloat_FromString(): Conversion of sprintf() to PyOS_snprintf() for Barry Warsaw <barry@python.org> parents: 20829 diff changeset	263 "invalid literal for float(): %.200s", s);
14783 77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	264 PyErr_SetString(PyExc_ValueError, buffer);
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	265 return NULL;
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	266 }
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	267 /* Since end != s, the platform made some kind of sense out
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	268 of the input. Trust it. */
11383 aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	269 while (end && isspace(Py_CHARMASK(end)))
aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	270 end++;
aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	271 if (*end != '\0') {
21079 8cef75cacb01 PyFloat_FromString(): Conversion of sprintf() to PyOS_snprintf() for Barry Warsaw <barry@python.org> parents: 20829 diff changeset	272 PyOS_snprintf(buffer, sizeof(buffer),
8cef75cacb01 PyFloat_FromString(): Conversion of sprintf() to PyOS_snprintf() for Barry Warsaw <barry@python.org> parents: 20829 diff changeset	273 "invalid literal for float(): %.200s", s);
11383 aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	274 PyErr_SetString(PyExc_ValueError, buffer);
aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	275 return NULL;
aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	276 }
11969 74b7213fb609 Many changes for Unicode, by Marc-Andre Lemburg. Guido van Rossum <guido@python.org> parents: 11673 diff changeset	277 else if (end != last) {
11383 aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	278 PyErr_SetString(PyExc_ValueError,
aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	279 "null byte in argument for float()");
aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	280 return NULL;
aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	281 }
14783 77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	282 if (x == 0.0) {
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	283 /* See above -- may have been strtod being anal
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	284 about denorms. */
14851 5449302c4d2e Replace SIGFPE paranoia around strtod and atof. I don't believe these Tim Peters <tim.peters@gmail.com> parents: 14783 diff changeset	285 PyFPE_START_PROTECT("atof", return NULL)
32305 13656d58d450 Patch #774665: Make Python LC_NUMERIC agnostic. Martin v. Löwis <martin@v.loewis.de> parents: 32150 diff changeset	286 x = PyOS_ascii_atof(s);
14851 5449302c4d2e Replace SIGFPE paranoia around strtod and atof. I don't believe these Tim Peters <tim.peters@gmail.com> parents: 14783 diff changeset	287 PyFPE_END_PROTECT(x)
14783 77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	288 errno = 0; /* whether atof ever set errno is undefined */
11383 aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	289 }
aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	290 return PyFloat_FromDouble(x);
aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	291 }
aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	292
1313 6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c. Guido van Rossum <guido@python.org> parents: 1271 diff changeset	293 static void
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	294 float_dealloc(PyFloatObject *op)
745 c7b23cc8cded answer lint's complaints Guido van Rossum <guido@python.org> parents: 632 diff changeset	295 {
20277 2983b54256c7 Enable GC for new-style instances. This touches lots of files, since Guido van Rossum <guido@python.org> parents: 19976 diff changeset	296 if (PyFloat_CheckExact(op)) {
44350 26384b8180c7 #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, Py_TYPE and Py_REFCNT. Macros for b/w compatibility are available. Christian Heimes <christian@cheimes.de> parents: 44344 diff changeset	297 Py_TYPE(op) = (struct _typeobject *)free_list;
20277 2983b54256c7 Enable GC for new-style instances. This touches lots of files, since Guido van Rossum <guido@python.org> parents: 19976 diff changeset	298 free_list = op;
2983b54256c7 Enable GC for new-style instances. This touches lots of files, since Guido van Rossum <guido@python.org> parents: 19976 diff changeset	299 }
2983b54256c7 Enable GC for new-style instances. This touches lots of files, since Guido van Rossum <guido@python.org> parents: 19976 diff changeset	300 else
44350 26384b8180c7 #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, Py_TYPE and Py_REFCNT. Macros for b/w compatibility are available. Christian Heimes <christian@cheimes.de> parents: 44344 diff changeset	301 Py_TYPE(op)->tp_free((PyObject *)op);
745 c7b23cc8cded answer lint's complaints Guido van Rossum <guido@python.org> parents: 632 diff changeset	302 }
c7b23cc8cded answer lint's complaints Guido van Rossum <guido@python.org> parents: 632 diff changeset	303
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	304 double
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	305 PyFloat_AsDouble(PyObject *op)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	306 {
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	307 PyNumberMethods *nb;
d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	308 PyFloatObject *fo;
1746 1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1347 diff changeset	309 double val;
20823 c7aa332a2ffa SF bug #477221: abs and divmod act oddly with -0.0. Tim Peters <tim.peters@gmail.com> parents: 20654 diff changeset	310
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	311 if (op && PyFloat_Check(op))
d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	312 return PyFloat_AS_DOUBLE((PyFloatObject*) op);
20823 c7aa332a2ffa SF bug #477221: abs and divmod act oddly with -0.0. Tim Peters <tim.peters@gmail.com> parents: 20654 diff changeset	313
26272 fbccef8b3153 Improve exception message raised by PyFloat_AsDouble if the object does not Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 24898 diff changeset	314 if (op == NULL) {
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	315 PyErr_BadArgument();
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	316 return -1;
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	317 }
20823 c7aa332a2ffa SF bug #477221: abs and divmod act oddly with -0.0. Tim Peters <tim.peters@gmail.com> parents: 20654 diff changeset	318
44350 26384b8180c7 #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, Py_TYPE and Py_REFCNT. Macros for b/w compatibility are available. Christian Heimes <christian@cheimes.de> parents: 44344 diff changeset	319 if ((nb = Py_TYPE(op)->tp_as_number) == NULL \|\| nb->nb_float == NULL) {
26272 fbccef8b3153 Improve exception message raised by PyFloat_AsDouble if the object does not Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 24898 diff changeset	320 PyErr_SetString(PyExc_TypeError, "a float is required");
fbccef8b3153 Improve exception message raised by PyFloat_AsDouble if the object does not Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 24898 diff changeset	321 return -1;
fbccef8b3153 Improve exception message raised by PyFloat_AsDouble if the object does not Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 24898 diff changeset	322 }
fbccef8b3153 Improve exception message raised by PyFloat_AsDouble if the object does not Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 24898 diff changeset	323
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	324 fo = (PyFloatObject) (nb->nb_float) (op);
1746 1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1347 diff changeset	325 if (fo == NULL)
1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1347 diff changeset	326 return -1;
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	327 if (!PyFloat_Check(fo)) {
d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	328 PyErr_SetString(PyExc_TypeError,
d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	329 "nb_float should return float object");
1746 1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1347 diff changeset	330 return -1;
1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1347 diff changeset	331 }
20823 c7aa332a2ffa SF bug #477221: abs and divmod act oddly with -0.0. Tim Peters <tim.peters@gmail.com> parents: 20654 diff changeset	332
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	333 val = PyFloat_AS_DOUBLE(fo);
d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	334 Py_DECREF(fo);
20823 c7aa332a2ffa SF bug #477221: abs and divmod act oddly with -0.0. Tim Peters <tim.peters@gmail.com> parents: 20654 diff changeset	335
1746 1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1347 diff changeset	336 return val;
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	337 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	338
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	339 /* Methods */
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	340
21097 9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	341 static void
9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	342 format_float(char buf, size_t buflen, PyFloatObject v, int precision)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	343 {
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	344 register char *cp;
32305 13656d58d450 Patch #774665: Make Python LC_NUMERIC agnostic. Martin v. Löwis <martin@v.loewis.de> parents: 32150 diff changeset	345 char format[32];
44344 1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	346 int i;
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	347
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	348 /* Subroutine for float_repr and float_print.
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	349 We want float numbers to be recognizable as such,
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	350 i.e., they should contain a decimal point or an exponent.
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	351 However, %g may print the number as an integer;
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	352 in such cases, we append ".0" to the string. */
21097 9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	353
9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	354 assert(PyFloat_Check(v));
32305 13656d58d450 Patch #774665: Make Python LC_NUMERIC agnostic. Martin v. Löwis <martin@v.loewis.de> parents: 32150 diff changeset	355 PyOS_snprintf(format, 32, "%%.%ig", precision);
13656d58d450 Patch #774665: Make Python LC_NUMERIC agnostic. Martin v. Löwis <martin@v.loewis.de> parents: 32150 diff changeset	356 PyOS_ascii_formatd(buf, buflen, format, v->ob_fval);
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	357 cp = buf;
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	358 if (*cp == '-')
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	359 cp++;
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	360 for (; *cp != '\0'; cp++) {
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	361 /* Any non-digit means it's not an integer;
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	362 this takes care of NAN and INF as well. */
2308 14b126d0b5be use Py_CHARMASK; and don't check for neg. float to the float power here Guido van Rossum <guido@python.org> parents: 2156 diff changeset	363 if (!isdigit(Py_CHARMASK(*cp)))
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	364 break;
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	365 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	366 if (*cp == '\0') {
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	367 *cp++ = '.';
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	368 *cp++ = '0';
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	369 *cp++ = '\0';
44344 1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	370 return;
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	371 }
44344 1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	372 /* Checking the next three chars should be more than enough to
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	373 * detect inf or nan, even on Windows. We check for inf or nan
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	374 * at last because they are rare cases.
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	375 */
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	376 for (i=0; *cp != '\0' && i<3; cp++, i++) {
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	377 if (isdigit(Py_CHARMASK(cp)) \|\| cp == '.')
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	378 continue;
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	379 /* found something that is neither a digit nor point
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	380 * it might be a NaN or INF
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	381 */
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	382 #ifdef Py_NAN
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	383 if (Py_IS_NAN(v->ob_fval)) {
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	384 strcpy(buf, "nan");
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	385 }
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	386 else
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	387 #endif
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	388 if (Py_IS_INFINITY(v->ob_fval)) {
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	389 cp = buf;
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	390 if (*cp == '-')
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	391 cp++;
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	392 strcpy(cp, "inf");
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	393 }
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	394 break;
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	395 }
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	396
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	397 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	398
21097 9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	399 /* XXX PyFloat_AsStringEx should not be a public API function (for one
9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	400 XXX thing, its signature passes a buffer without a length; for another,
9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	401 XXX it isn't useful outside this file).
9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	402 */
9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	403 void
9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	404 PyFloat_AsStringEx(char buf, PyFloatObject v, int precision)
9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	405 {
9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	406 format_float(buf, 100, v, precision);
9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	407 }
9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	408
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	409 /* Macro and helper that convert PyObject obj to a C double and store
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	410 the value in dbl; this replaces the functionality of the coercion
21354 fbddb64d21c2 float_floor_div: An expression like 3.//1j crashed the interpreter, or Tim Peters <tim.peters@gmail.com> parents: 21353 diff changeset	411 slot function. If conversion to double raises an exception, obj is
fbddb64d21c2 float_floor_div: An expression like 3.//1j crashed the interpreter, or Tim Peters <tim.peters@gmail.com> parents: 21353 diff changeset	412 set to NULL, and the function invoking this macro returns NULL. If
fbddb64d21c2 float_floor_div: An expression like 3.//1j crashed the interpreter, or Tim Peters <tim.peters@gmail.com> parents: 21353 diff changeset	413 obj is not of float, int or long type, Py_NotImplemented is incref'ed,
fbddb64d21c2 float_floor_div: An expression like 3.//1j crashed the interpreter, or Tim Peters <tim.peters@gmail.com> parents: 21353 diff changeset	414 stored in obj, and returned from the function invoking this macro.
fbddb64d21c2 float_floor_div: An expression like 3.//1j crashed the interpreter, or Tim Peters <tim.peters@gmail.com> parents: 21353 diff changeset	415 */
47822 3ada46f2321d Revert 64424, 64438, and 64439. Raymond Hettinger <python@rcn.com> parents: 47791 diff changeset	416 #define CONVERT_TO_DOUBLE(obj, dbl) \
3ada46f2321d Revert 64424, 64438, and 64439. Raymond Hettinger <python@rcn.com> parents: 47791 diff changeset	417 if (PyFloat_Check(obj)) \
3ada46f2321d Revert 64424, 64438, and 64439. Raymond Hettinger <python@rcn.com> parents: 47791 diff changeset	418 dbl = PyFloat_AS_DOUBLE(obj); \
3ada46f2321d Revert 64424, 64438, and 64439. Raymond Hettinger <python@rcn.com> parents: 47791 diff changeset	419 else if (convert_to_double(&(obj), &(dbl)) < 0) \
3ada46f2321d Revert 64424, 64438, and 64439. Raymond Hettinger <python@rcn.com> parents: 47791 diff changeset	420 return obj;
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	421
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	422 static int
19674 715244108faa Raise OverflowError when appropriate on long->float conversion. Most of Tim Peters <tim.peters@gmail.com> parents: 19673 diff changeset	423 convert_to_double(PyObject *v, double dbl)
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	424 {
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	425 register PyObject obj = v;
19674 715244108faa Raise OverflowError when appropriate on long->float conversion. Most of Tim Peters <tim.peters@gmail.com> parents: 19673 diff changeset	426
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	427 if (PyInt_Check(obj)) {
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	428 *dbl = (double)PyInt_AS_LONG(obj);
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	429 }
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	430 else if (PyLong_Check(obj)) {
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	431 *dbl = PyLong_AsDouble(obj);
19674 715244108faa Raise OverflowError when appropriate on long->float conversion. Most of Tim Peters <tim.peters@gmail.com> parents: 19673 diff changeset	432 if (*dbl == -1.0 && PyErr_Occurred()) {
715244108faa Raise OverflowError when appropriate on long->float conversion. Most of Tim Peters <tim.peters@gmail.com> parents: 19673 diff changeset	433 *v = NULL;
715244108faa Raise OverflowError when appropriate on long->float conversion. Most of Tim Peters <tim.peters@gmail.com> parents: 19673 diff changeset	434 return -1;
715244108faa Raise OverflowError when appropriate on long->float conversion. Most of Tim Peters <tim.peters@gmail.com> parents: 19673 diff changeset	435 }
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	436 }
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	437 else {
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	438 Py_INCREF(Py_NotImplemented);
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	439 *v = Py_NotImplemented;
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	440 return -1;
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	441 }
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	442 return 0;
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	443 }
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	444
11631 cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	445 /* Precisions used by repr() and str(), respectively.
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	446
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	447 The repr() precision (17 significant decimal digits) is the minimal number
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	448 that is guaranteed to have enough precision so that if the number is read
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	449 back in the exact same binary value is recreated. This is true for IEEE
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	450 floating point by design, and also happens to work for all other modern
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	451 hardware.
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	452
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	453 The str() precision is chosen so that in most cases, the rounding noise
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	454 created by various operations is suppressed, while giving plenty of
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	455 precision for practical use.
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	456
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	457 */
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	458
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	459 #define PREC_REPR 17
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	460 #define PREC_STR 12
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	461
21097 9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	462 /* XXX PyFloat_AsString and PyFloat_AsReprString should be deprecated:
9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	463 XXX they pass a char buffer without passing a length.
9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	464 */
11631 cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	465 void
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	466 PyFloat_AsString(char buf, PyFloatObject v)
11631 cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	467 {
21097 9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	468 format_float(buf, 100, v, PREC_STR);
11631 cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	469 }
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	470
17707 fe4c1034b480 SF bug #422177: Results from .pyc differs from .py Tim Peters <tim.peters@gmail.com> parents: 17029 diff changeset	471 void
fe4c1034b480 SF bug #422177: Results from .pyc differs from .py Tim Peters <tim.peters@gmail.com> parents: 17029 diff changeset	472 PyFloat_AsReprString(char buf, PyFloatObject v)
fe4c1034b480 SF bug #422177: Results from .pyc differs from .py Tim Peters <tim.peters@gmail.com> parents: 17029 diff changeset	473 {
21097 9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	474 format_float(buf, 100, v, PREC_REPR);
17707 fe4c1034b480 SF bug #422177: Results from .pyc differs from .py Tim Peters <tim.peters@gmail.com> parents: 17029 diff changeset	475 }
fe4c1034b480 SF bug #422177: Results from .pyc differs from .py Tim Peters <tim.peters@gmail.com> parents: 17029 diff changeset	476
745 c7b23cc8cded answer lint's complaints Guido van Rossum <guido@python.org> parents: 632 diff changeset	477 /* ARGSUSED */
284 6ac402023cac printobject now returns an error code Guido van Rossum <guido@python.org> parents: 268 diff changeset	478 static int
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	479 float_print(PyFloatObject v, FILE fp, int flags)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	480 {
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	481 char buf[100];
21097 9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	482 format_float(buf, sizeof(buf), v,
9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	483 (flags & Py_PRINT_RAW) ? PREC_STR : PREC_REPR);
43378 7630248b593c Add a bunch of GIL release/acquire points in tp_print implementations and for Brett Cannon <bcannon@gmail.com> parents: 42333 diff changeset	484 Py_BEGIN_ALLOW_THREADS
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	485 fputs(buf, fp);
43378 7630248b593c Add a bunch of GIL release/acquire points in tp_print implementations and for Brett Cannon <bcannon@gmail.com> parents: 42333 diff changeset	486 Py_END_ALLOW_THREADS
284 6ac402023cac printobject now returns an error code Guido van Rossum <guido@python.org> parents: 268 diff changeset	487 return 0;
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	488 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	489
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	490 static PyObject *
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	491 float_repr(PyFloatObject *v)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	492 {
44267 f909872917b9 The new float repr causes too much trouble and pain. I'm disabling the feature until we have sorted out the issues on all machines. 64bit machines seem to have issues and Guido has reported even worse. Christian Heimes <christian@cheimes.de> parents: 44262 diff changeset	493 char buf[100];
f909872917b9 The new float repr causes too much trouble and pain. I'm disabling the feature until we have sorted out the issues on all machines. 64bit machines seem to have issues and Guido has reported even worse. Christian Heimes <christian@cheimes.de> parents: 44262 diff changeset	494 format_float(buf, sizeof(buf), v, PREC_REPR);
f909872917b9 The new float repr causes too much trouble and pain. I'm disabling the feature until we have sorted out the issues on all machines. 64bit machines seem to have issues and Guido has reported even worse. Christian Heimes <christian@cheimes.de> parents: 44262 diff changeset	495
47527 52294af4b663 This reverts r63675 based on the discussion in this thread: Gregory P. Smith <greg@mad-scientist.com> parents: 47392 diff changeset	496 return PyString_FromString(buf);
11631 cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	497 }
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	498
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	499 static PyObject *
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	500 float_str(PyFloatObject *v)
11631 cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	501 {
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	502 char buf[100];
21097 9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	503 format_float(buf, sizeof(buf), v, PREC_STR);
47527 52294af4b663 This reverts r63675 based on the discussion in this thread: Gregory P. Smith <greg@mad-scientist.com> parents: 47392 diff changeset	504 return PyString_FromString(buf);
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	505 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	506
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	507 /* Comparison is pretty much a nightmare. When comparing float to float,
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	508 * we do it as straightforwardly (and long-windedly) as conceivable, so
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	509 * that, e.g., Python x == y delivers the same result as the platform
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	510 * C x == y when x and/or y is a NaN.
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	511 * When mixing float with an integer type, there's no good uniform approach.
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	512 * Converting the double to an integer obviously doesn't work, since we
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	513 * may lose info from fractional bits. Converting the integer to a double
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	514 * also has two failure modes: (1) a long int may trigger overflow (too
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	515 * large to fit in the dynamic range of a C double); (2) even a C long may have
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	516 * more bits than fit in a C double (e.g., on a a 64-bit box long may have
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	517 * 63 bits of precision, but a C double probably has only 53), and then
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	518 * we can falsely claim equality when low-order integer bits are lost by
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	519 * coercion to double. So this part is painful too.
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	520 */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	521
31553 a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	522 static PyObject*
a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	523 float_richcompare(PyObject v, PyObject w, int op)
a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	524 {
a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	525 double i, j;
a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	526 int r = 0;
a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	527
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	528 assert(PyFloat_Check(v));
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	529 i = PyFloat_AS_DOUBLE(v);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	530
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	531 /* Switch on the type of w. Set i and j to doubles to be compared,
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	532 * and op to the richcomp to use.
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	533 */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	534 if (PyFloat_Check(w))
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	535 j = PyFloat_AS_DOUBLE(w);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	536
38293 688f25757104 Added a new macro, Py_IS_FINITE(X). On windows there is an intrinsic for this and it is more efficient than to use !Py_IS_INFINITE(X) && !Py_IS_NAN(X). No change on other platforms Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 37815 diff changeset	537 else if (!Py_IS_FINITE(i)) {
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	538 if (PyInt_Check(w) \|\| PyLong_Check(w))
33549 ecaf0e8fa737 float_richcompare(): Use the new Py_IS_NAN macro to ensure that, on Tim Peters <tim.peters@gmail.com> parents: 33547 diff changeset	539 /* If i is an infinity, its magnitude exceeds any
ecaf0e8fa737 float_richcompare(): Use the new Py_IS_NAN macro to ensure that, on Tim Peters <tim.peters@gmail.com> parents: 33547 diff changeset	540 * finite integer, so it doesn't matter which int we
ecaf0e8fa737 float_richcompare(): Use the new Py_IS_NAN macro to ensure that, on Tim Peters <tim.peters@gmail.com> parents: 33547 diff changeset	541 * compare i with. If i is a NaN, similarly.
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	542 */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	543 j = 0.0;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	544 else
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	545 goto Unimplemented;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	546 }
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	547
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	548 else if (PyInt_Check(w)) {
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	549 long jj = PyInt_AS_LONG(w);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	550 /* In the worst realistic case I can imagine, C double is a
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	551 * Cray single with 48 bits of precision, and long has 64
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	552 * bits.
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	553 */
33549 ecaf0e8fa737 float_richcompare(): Use the new Py_IS_NAN macro to ensure that, on Tim Peters <tim.peters@gmail.com> parents: 33547 diff changeset	554 #if SIZEOF_LONG > 6
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	555 unsigned long abs = (unsigned long)(jj < 0 ? -jj : jj);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	556 if (abs >> 48) {
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	557 /* Needs more than 48 bits. Make it take the
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	558 * PyLong path.
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	559 */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	560 PyObject *result;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	561 PyObject *ww = PyLong_FromLong(jj);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	562
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	563 if (ww == NULL)
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	564 return NULL;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	565 result = float_richcompare(v, ww, op);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	566 Py_DECREF(ww);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	567 return result;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	568 }
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	569 #endif
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	570 j = (double)jj;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	571 assert((long)j == jj);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	572 }
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	573
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	574 else if (PyLong_Check(w)) {
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	575 int vsign = i == 0.0 ? 0 : i < 0.0 ? -1 : 1;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	576 int wsign = _PyLong_Sign(w);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	577 size_t nbits;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	578 int exponent;
31553 a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	579
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	580 if (vsign != wsign) {
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	581 /* Magnitudes are irrelevant -- the signs alone
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	582 * determine the outcome.
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	583 */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	584 i = (double)vsign;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	585 j = (double)wsign;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	586 goto Compare;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	587 }
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	588 /* The signs are the same. */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	589 /* Convert w to a double if it fits. In particular, 0 fits. */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	590 nbits = _PyLong_NumBits(w);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	591 if (nbits == (size_t)-1 && PyErr_Occurred()) {
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	592 /* This long is so large that size_t isn't big enough
33549 ecaf0e8fa737 float_richcompare(): Use the new Py_IS_NAN macro to ensure that, on Tim Peters <tim.peters@gmail.com> parents: 33547 diff changeset	593 * to hold the # of bits. Replace with little doubles
ecaf0e8fa737 float_richcompare(): Use the new Py_IS_NAN macro to ensure that, on Tim Peters <tim.peters@gmail.com> parents: 33547 diff changeset	594 * that give the same outcome -- w is so large that
ecaf0e8fa737 float_richcompare(): Use the new Py_IS_NAN macro to ensure that, on Tim Peters <tim.peters@gmail.com> parents: 33547 diff changeset	595 * its magnitude must exceed the magnitude of any
ecaf0e8fa737 float_richcompare(): Use the new Py_IS_NAN macro to ensure that, on Tim Peters <tim.peters@gmail.com> parents: 33547 diff changeset	596 * finite float.
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	597 */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	598 PyErr_Clear();
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	599 i = (double)vsign;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	600 assert(wsign != 0);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	601 j = wsign * 2.0;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	602 goto Compare;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	603 }
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	604 if (nbits <= 48) {
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	605 j = PyLong_AsDouble(w);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	606 /* It's impossible that <= 48 bits overflowed. */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	607 assert(j != -1.0 \|\| ! PyErr_Occurred());
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	608 goto Compare;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	609 }
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	610 assert(wsign != 0); /* else nbits was 0 */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	611 assert(vsign != 0); /* if vsign were 0, then since wsign is
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	612 * not 0, we would have taken the
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	613 * vsign != wsign branch at the start */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	614 /* We want to work with non-negative numbers. */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	615 if (vsign < 0) {
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	616 /* "Multiply both sides" by -1; this also swaps the
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	617 * comparator.
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	618 */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	619 i = -i;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	620 op = _Py_SwappedOp[op];
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	621 }
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	622 assert(i > 0.0);
36235 9f66bdd5a061 Fix icc warnings: remove unused variable Neal Norwitz <nnorwitz@gmail.com> parents: 35999 diff changeset	623 (void) frexp(i, &exponent);
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	624 /* exponent is the # of bits in v before the radix point;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	625 * we know that nbits (the # of bits in w) > 48 at this point
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	626 */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	627 if (exponent < 0 \|\| (size_t)exponent < nbits) {
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	628 i = 1.0;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	629 j = 2.0;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	630 goto Compare;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	631 }
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	632 if ((size_t)exponent > nbits) {
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	633 i = 2.0;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	634 j = 1.0;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	635 goto Compare;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	636 }
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	637 /* v and w have the same number of bits before the radix
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	638 * point. Construct two longs that have the same comparison
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	639 * outcome.
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	640 */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	641 {
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	642 double fracpart;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	643 double intpart;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	644 PyObject *result = NULL;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	645 PyObject *one = NULL;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	646 PyObject *vv = NULL;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	647 PyObject *ww = w;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	648
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	649 if (wsign < 0) {
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	650 ww = PyNumber_Negative(w);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	651 if (ww == NULL)
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	652 goto Error;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	653 }
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	654 else
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	655 Py_INCREF(ww);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	656
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	657 fracpart = modf(i, &intpart);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	658 vv = PyLong_FromDouble(intpart);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	659 if (vv == NULL)
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	660 goto Error;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	661
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	662 if (fracpart != 0.0) {
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	663 /* Shift left, and or a 1 bit into vv
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	664 * to represent the lost fraction.
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	665 */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	666 PyObject *temp;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	667
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	668 one = PyInt_FromLong(1);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	669 if (one == NULL)
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	670 goto Error;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	671
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	672 temp = PyNumber_Lshift(ww, one);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	673 if (temp == NULL)
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	674 goto Error;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	675 Py_DECREF(ww);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	676 ww = temp;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	677
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	678 temp = PyNumber_Lshift(vv, one);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	679 if (temp == NULL)
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	680 goto Error;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	681 Py_DECREF(vv);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	682 vv = temp;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	683
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	684 temp = PyNumber_Or(vv, one);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	685 if (temp == NULL)
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	686 goto Error;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	687 Py_DECREF(vv);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	688 vv = temp;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	689 }
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	690
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	691 r = PyObject_RichCompareBool(vv, ww, op);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	692 if (r < 0)
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	693 goto Error;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	694 result = PyBool_FromLong(r);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	695 Error:
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	696 Py_XDECREF(vv);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	697 Py_XDECREF(ww);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	698 Py_XDECREF(one);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	699 return result;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	700 }
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	701 } /* else if (PyLong_Check(w)) */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	702
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	703 else /* w isn't float, int, or long */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	704 goto Unimplemented;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	705
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	706 Compare:
31553 a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	707 PyFPE_START_PROTECT("richcompare", return NULL)
a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	708 switch (op) {
a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	709 case Py_EQ:
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	710 r = i == j;
31553 a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	711 break;
a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	712 case Py_NE:
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	713 r = i != j;
31553 a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	714 break;
a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	715 case Py_LE:
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	716 r = i <= j;
31553 a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	717 break;
a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	718 case Py_GE:
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	719 r = i >= j;
31553 a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	720 break;
a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	721 case Py_LT:
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	722 r = i < j;
31553 a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	723 break;
a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	724 case Py_GT:
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	725 r = i > j;
31553 a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	726 break;
a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	727 }
31589 ca3c998afa55 Pass a variable that actually exists to PyFPE_END_PROTECT in Michael W. Hudson <mwh@python.net> parents: 31553 diff changeset	728 PyFPE_END_PROTECT(r)
31553 a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	729 return PyBool_FromLong(r);
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	730
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	731 Unimplemented:
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	732 Py_INCREF(Py_NotImplemented);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	733 return Py_NotImplemented;
31553 a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	734 }
a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	735
1257 1cabc2b6c970 * Changed all copyright messages to include 1993. Guido van Rossum <guido@python.org> parents: 1252 diff changeset	736 static long
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	737 float_hash(PyFloatObject *v)
1257 1cabc2b6c970 * Changed all copyright messages to include 1993. Guido van Rossum <guido@python.org> parents: 1252 diff changeset	738 {
13976 5ada9fa54801 Fix for http://sourceforge.net/bugs/?func=detailbug&bug_id=111866&group_id=5470. Tim Peters <tim.peters@gmail.com> parents: 13944 diff changeset	739 return _Py_HashDouble(v->ob_fval);
1257 1cabc2b6c970 * Changed all copyright messages to include 1993. Guido van Rossum <guido@python.org> parents: 1252 diff changeset	740 }
1cabc2b6c970 * Changed all copyright messages to include 1993. Guido van Rossum <guido@python.org> parents: 1252 diff changeset	741
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	742 static PyObject *
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	743 float_add(PyObject v, PyObject w)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	744 {
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	745 double a,b;
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	746 CONVERT_TO_DOUBLE(v, a);
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	747 CONVERT_TO_DOUBLE(w, b);
5118 002865af55e5 Changes for Lee Busby's SIGFPE patch set. Guido van Rossum <guido@python.org> parents: 4933 diff changeset	748 PyFPE_START_PROTECT("add", return 0)
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	749 a = a + b;
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	750 PyFPE_END_PROTECT(a)
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	751 return PyFloat_FromDouble(a);
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	752 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	753
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	754 static PyObject *
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	755 float_sub(PyObject v, PyObject w)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	756 {
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	757 double a,b;
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	758 CONVERT_TO_DOUBLE(v, a);
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	759 CONVERT_TO_DOUBLE(w, b);
5118 002865af55e5 Changes for Lee Busby's SIGFPE patch set. Guido van Rossum <guido@python.org> parents: 4933 diff changeset	760 PyFPE_START_PROTECT("subtract", return 0)
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	761 a = a - b;
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	762 PyFPE_END_PROTECT(a)
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	763 return PyFloat_FromDouble(a);
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	764 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	765
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	766 static PyObject *
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	767 float_mul(PyObject v, PyObject w)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	768 {
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	769 double a,b;
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	770 CONVERT_TO_DOUBLE(v, a);
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	771 CONVERT_TO_DOUBLE(w, b);
5118 002865af55e5 Changes for Lee Busby's SIGFPE patch set. Guido van Rossum <guido@python.org> parents: 4933 diff changeset	772 PyFPE_START_PROTECT("multiply", return 0)
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	773 a = a * b;
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	774 PyFPE_END_PROTECT(a)
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	775 return PyFloat_FromDouble(a);
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	776 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	777
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	778 static PyObject *
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	779 float_div(PyObject v, PyObject w)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	780 {
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	781 double a,b;
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	782 CONVERT_TO_DOUBLE(v, a);
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	783 CONVERT_TO_DOUBLE(w, b);
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	784 #ifdef Py_NAN
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	785 if (b == 0.0) {
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	786 PyErr_SetString(PyExc_ZeroDivisionError,
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	787 "float division");
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	788 return NULL;
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	789 }
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	790 #endif
5118 002865af55e5 Changes for Lee Busby's SIGFPE patch set. Guido van Rossum <guido@python.org> parents: 4933 diff changeset	791 PyFPE_START_PROTECT("divide", return 0)
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	792 a = a / b;
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	793 PyFPE_END_PROTECT(a)
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	794 return PyFloat_FromDouble(a);
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	795 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	796
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	797 static PyObject *
19633 c0a44829bcd5 Add warning mode for classic division, almost exactly as specified in Guido van Rossum <guido@python.org> parents: 19590 diff changeset	798 float_classic_div(PyObject v, PyObject w)
c0a44829bcd5 Add warning mode for classic division, almost exactly as specified in Guido van Rossum <guido@python.org> parents: 19590 diff changeset	799 {
c0a44829bcd5 Add warning mode for classic division, almost exactly as specified in Guido van Rossum <guido@python.org> parents: 19590 diff changeset	800 double a,b;
c0a44829bcd5 Add warning mode for classic division, almost exactly as specified in Guido van Rossum <guido@python.org> parents: 19590 diff changeset	801 CONVERT_TO_DOUBLE(v, a);
c0a44829bcd5 Add warning mode for classic division, almost exactly as specified in Guido van Rossum <guido@python.org> parents: 19590 diff changeset	802 CONVERT_TO_DOUBLE(w, b);
19673 b3271297b984 PEP 238 documented -Qwarn as warning only for classic int or long Guido van Rossum <guido@python.org> parents: 19666 diff changeset	803 if (Py_DivisionWarningFlag >= 2 &&
19633 c0a44829bcd5 Add warning mode for classic division, almost exactly as specified in Guido van Rossum <guido@python.org> parents: 19590 diff changeset	804 PyErr_Warn(PyExc_DeprecationWarning, "classic float division") < 0)
c0a44829bcd5 Add warning mode for classic division, almost exactly as specified in Guido van Rossum <guido@python.org> parents: 19590 diff changeset	805 return NULL;
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	806 #ifdef Py_NAN
19633 c0a44829bcd5 Add warning mode for classic division, almost exactly as specified in Guido van Rossum <guido@python.org> parents: 19590 diff changeset	807 if (b == 0.0) {
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	808 PyErr_SetString(PyExc_ZeroDivisionError,
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	809 "float division");
19633 c0a44829bcd5 Add warning mode for classic division, almost exactly as specified in Guido van Rossum <guido@python.org> parents: 19590 diff changeset	810 return NULL;
c0a44829bcd5 Add warning mode for classic division, almost exactly as specified in Guido van Rossum <guido@python.org> parents: 19590 diff changeset	811 }
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	812 #endif
19633 c0a44829bcd5 Add warning mode for classic division, almost exactly as specified in Guido van Rossum <guido@python.org> parents: 19590 diff changeset	813 PyFPE_START_PROTECT("divide", return 0)
c0a44829bcd5 Add warning mode for classic division, almost exactly as specified in Guido van Rossum <guido@python.org> parents: 19590 diff changeset	814 a = a / b;
c0a44829bcd5 Add warning mode for classic division, almost exactly as specified in Guido van Rossum <guido@python.org> parents: 19590 diff changeset	815 PyFPE_END_PROTECT(a)
c0a44829bcd5 Add warning mode for classic division, almost exactly as specified in Guido van Rossum <guido@python.org> parents: 19590 diff changeset	816 return PyFloat_FromDouble(a);
c0a44829bcd5 Add warning mode for classic division, almost exactly as specified in Guido van Rossum <guido@python.org> parents: 19590 diff changeset	817 }
c0a44829bcd5 Add warning mode for classic division, almost exactly as specified in Guido van Rossum <guido@python.org> parents: 19590 diff changeset	818
c0a44829bcd5 Add warning mode for classic division, almost exactly as specified in Guido van Rossum <guido@python.org> parents: 19590 diff changeset	819 static PyObject *
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	820 float_rem(PyObject v, PyObject w)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	821 {
632 0c1938f2e0c0 Get rid of redundant type checks. Guido van Rossum <guido@python.org> parents: 496 diff changeset	822 double vx, wx;
10833 135c1ec9636c Tim Peters writes: Guido van Rossum <guido@python.org> parents: 10432 diff changeset	823 double mod;
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	824 CONVERT_TO_DOUBLE(v, vx);
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	825 CONVERT_TO_DOUBLE(w, wx);
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	826 #ifdef Py_NAN
632 0c1938f2e0c0 Get rid of redundant type checks. Guido van Rossum <guido@python.org> parents: 496 diff changeset	827 if (wx == 0.0) {
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	828 PyErr_SetString(PyExc_ZeroDivisionError,
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	829 "float modulo");
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	830 return NULL;
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	831 }
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	832 #endif
5118 002865af55e5 Changes for Lee Busby's SIGFPE patch set. Guido van Rossum <guido@python.org> parents: 4933 diff changeset	833 PyFPE_START_PROTECT("modulo", return 0)
632 0c1938f2e0c0 Get rid of redundant type checks. Guido van Rossum <guido@python.org> parents: 496 diff changeset	834 mod = fmod(vx, wx);
10833 135c1ec9636c Tim Peters writes: Guido van Rossum <guido@python.org> parents: 10432 diff changeset	835 /* note: checking mod*wx < 0 is incorrect -- underflows to
135c1ec9636c Tim Peters writes: Guido van Rossum <guido@python.org> parents: 10432 diff changeset	836 0 if wx < sqrt(smallest nonzero double) */
135c1ec9636c Tim Peters writes: Guido van Rossum <guido@python.org> parents: 10432 diff changeset	837 if (mod && ((wx < 0) != (mod < 0))) {
632 0c1938f2e0c0 Get rid of redundant type checks. Guido van Rossum <guido@python.org> parents: 496 diff changeset	838 mod += wx;
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	839 }
5197 74c12704a0bd New form of PyFPE_END_PROTECT macro. Guido van Rossum <guido@python.org> parents: 5118 diff changeset	840 PyFPE_END_PROTECT(mod)
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	841 return PyFloat_FromDouble(mod);
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	842 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	843
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	844 static PyObject *
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	845 float_divmod(PyObject v, PyObject w)
227 7ec6058b539b Added (dummy) divmod and (functional) abs. Guido van Rossum <guido@python.org> parents: 145 diff changeset	846 {
391 caf8466dcc9c Finally implemented divmod(). Guido van Rossum <guido@python.org> parents: 284 diff changeset	847 double vx, wx;
10833 135c1ec9636c Tim Peters writes: Guido van Rossum <guido@python.org> parents: 10432 diff changeset	848 double div, mod, floordiv;
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	849 CONVERT_TO_DOUBLE(v, vx);
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	850 CONVERT_TO_DOUBLE(w, wx);
391 caf8466dcc9c Finally implemented divmod(). Guido van Rossum <guido@python.org> parents: 284 diff changeset	851 if (wx == 0.0) {
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	852 PyErr_SetString(PyExc_ZeroDivisionError, "float divmod()");
391 caf8466dcc9c Finally implemented divmod(). Guido van Rossum <guido@python.org> parents: 284 diff changeset	853 return NULL;
caf8466dcc9c Finally implemented divmod(). Guido van Rossum <guido@python.org> parents: 284 diff changeset	854 }
5118 002865af55e5 Changes for Lee Busby's SIGFPE patch set. Guido van Rossum <guido@python.org> parents: 4933 diff changeset	855 PyFPE_START_PROTECT("divmod", return 0)
391 caf8466dcc9c Finally implemented divmod(). Guido van Rossum <guido@python.org> parents: 284 diff changeset	856 mod = fmod(vx, wx);
14616 284508c653c7 Fixed legit gripe from c.l.py that math.fmod docs aren't confusing enough. Tim Peters <tim.peters@gmail.com> parents: 14375 diff changeset	857 /* fmod is typically exact, so vx-mod is mathematically an
10833 135c1ec9636c Tim Peters writes: Guido van Rossum <guido@python.org> parents: 10432 diff changeset	858 exact multiple of wx. But this is fp arithmetic, and fp
135c1ec9636c Tim Peters writes: Guido van Rossum <guido@python.org> parents: 10432 diff changeset	859 vx - mod is an approximation; the result is that div may
135c1ec9636c Tim Peters writes: Guido van Rossum <guido@python.org> parents: 10432 diff changeset	860 not be an exact integral value after the division, although
135c1ec9636c Tim Peters writes: Guido van Rossum <guido@python.org> parents: 10432 diff changeset	861 it will always be very close to one.
135c1ec9636c Tim Peters writes: Guido van Rossum <guido@python.org> parents: 10432 diff changeset	862 */
391 caf8466dcc9c Finally implemented divmod(). Guido van Rossum <guido@python.org> parents: 284 diff changeset	863 div = (vx - mod) / wx;
20827 95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	864 if (mod) {
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	865 /* ensure the remainder has the same sign as the denominator */
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	866 if ((wx < 0) != (mod < 0)) {
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	867 mod += wx;
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	868 div -= 1.0;
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	869 }
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	870 }
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	871 else {
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	872 /* the remainder is zero, and in the presence of signed zeroes
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	873 fmod returns different results across platforms; ensure
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	874 it has the same sign as the denominator; we'd like to do
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	875 "mod = wx * 0.0", but that may get optimized away */
20829 14dc693af532 float_divmod(): the code wasn't sick enough to stop the MS optimizer Tim Peters <tim.peters@gmail.com> parents: 20827 diff changeset	876 mod = mod; / hide "mod = +0" from optimizer */
20827 95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	877 if (wx < 0.0)
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	878 mod = -mod;
391 caf8466dcc9c Finally implemented divmod(). Guido van Rossum <guido@python.org> parents: 284 diff changeset	879 }
10833 135c1ec9636c Tim Peters writes: Guido van Rossum <guido@python.org> parents: 10432 diff changeset	880 /* snap quotient to nearest integral value */
20827 95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	881 if (div) {
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	882 floordiv = floor(div);
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	883 if (div - floordiv > 0.5)
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	884 floordiv += 1.0;
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	885 }
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	886 else {
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	887 /* div is zero - get the same sign as the true quotient */
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	888 div = div; / hide "div = +0" from optimizers */
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	889 floordiv = div * vx / wx; /* zero w/ sign of vx/wx */
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	890 }
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	891 PyFPE_END_PROTECT(floordiv)
10833 135c1ec9636c Tim Peters writes: Guido van Rossum <guido@python.org> parents: 10432 diff changeset	892 return Py_BuildValue("(dd)", floordiv, mod);
227 7ec6058b539b Added (dummy) divmod and (functional) abs. Guido van Rossum <guido@python.org> parents: 145 diff changeset	893 }
7ec6058b539b Added (dummy) divmod and (functional) abs. Guido van Rossum <guido@python.org> parents: 145 diff changeset	894
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	895 static PyObject *
21353 257c938900a6 float_int_div(): For clarity, move this closer to the other float Tim Peters <tim.peters@gmail.com> parents: 21097 diff changeset	896 float_floor_div(PyObject v, PyObject w)
257c938900a6 float_int_div(): For clarity, move this closer to the other float Tim Peters <tim.peters@gmail.com> parents: 21097 diff changeset	897 {
257c938900a6 float_int_div(): For clarity, move this closer to the other float Tim Peters <tim.peters@gmail.com> parents: 21097 diff changeset	898 PyObject t, r;
257c938900a6 float_int_div(): For clarity, move this closer to the other float Tim Peters <tim.peters@gmail.com> parents: 21097 diff changeset	899
257c938900a6 float_int_div(): For clarity, move this closer to the other float Tim Peters <tim.peters@gmail.com> parents: 21097 diff changeset	900 t = float_divmod(v, w);
21354 fbddb64d21c2 float_floor_div: An expression like 3.//1j crashed the interpreter, or Tim Peters <tim.peters@gmail.com> parents: 21353 diff changeset	901 if (t == NULL \|\| t == Py_NotImplemented)
fbddb64d21c2 float_floor_div: An expression like 3.//1j crashed the interpreter, or Tim Peters <tim.peters@gmail.com> parents: 21353 diff changeset	902 return t;
fbddb64d21c2 float_floor_div: An expression like 3.//1j crashed the interpreter, or Tim Peters <tim.peters@gmail.com> parents: 21353 diff changeset	903 assert(PyTuple_CheckExact(t));
fbddb64d21c2 float_floor_div: An expression like 3.//1j crashed the interpreter, or Tim Peters <tim.peters@gmail.com> parents: 21353 diff changeset	904 r = PyTuple_GET_ITEM(t, 0);
fbddb64d21c2 float_floor_div: An expression like 3.//1j crashed the interpreter, or Tim Peters <tim.peters@gmail.com> parents: 21353 diff changeset	905 Py_INCREF(r);
fbddb64d21c2 float_floor_div: An expression like 3.//1j crashed the interpreter, or Tim Peters <tim.peters@gmail.com> parents: 21353 diff changeset	906 Py_DECREF(t);
fbddb64d21c2 float_floor_div: An expression like 3.//1j crashed the interpreter, or Tim Peters <tim.peters@gmail.com> parents: 21353 diff changeset	907 return r;
21353 257c938900a6 float_int_div(): For clarity, move this closer to the other float Tim Peters <tim.peters@gmail.com> parents: 21097 diff changeset	908 }
257c938900a6 float_int_div(): For clarity, move this closer to the other float Tim Peters <tim.peters@gmail.com> parents: 21097 diff changeset	909
257c938900a6 float_int_div(): For clarity, move this closer to the other float Tim Peters <tim.peters@gmail.com> parents: 21097 diff changeset	910 static PyObject *
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	911 float_pow(PyObject v, PyObject w, PyObject *z)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	912 {
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	913 double iv, iw, ix;
19666 cf65ebf87560 New restriction on pow(x, y, z): If z is not None, x and y must be of Tim Peters <tim.peters@gmail.com> parents: 19633 diff changeset	914
cf65ebf87560 New restriction on pow(x, y, z): If z is not None, x and y must be of Tim Peters <tim.peters@gmail.com> parents: 19633 diff changeset	915 if ((PyObject *)z != Py_None) {
19719 cdfdd5359411 Make the error msgs in our pow() implementations consistent. Tim Peters <tim.peters@gmail.com> parents: 19674 diff changeset	916 PyErr_SetString(PyExc_TypeError, "pow() 3rd argument not "
19753 c0580d8c193e Better error msg for 3-arg pow with a float argument. Tim Peters <tim.peters@gmail.com> parents: 19750 diff changeset	917 "allowed unless all arguments are integers");
19666 cf65ebf87560 New restriction on pow(x, y, z): If z is not None, x and y must be of Tim Peters <tim.peters@gmail.com> parents: 19633 diff changeset	918 return NULL;
cf65ebf87560 New restriction on pow(x, y, z): If z is not None, x and y must be of Tim Peters <tim.peters@gmail.com> parents: 19633 diff changeset	919 }
cf65ebf87560 New restriction on pow(x, y, z): If z is not None, x and y must be of Tim Peters <tim.peters@gmail.com> parents: 19633 diff changeset	920
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	921 CONVERT_TO_DOUBLE(v, iv);
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	922 CONVERT_TO_DOUBLE(w, iw);
15041 7eefde90ec0e SF bug 115831 and Ping's SF patch 101751, 0.0*-2.0 returns inf rather than Tim Peters <tim.peters@gmail.com>* parents: 14869 diff changeset	923
7eefde90ec0e SF bug 115831 and Ping's SF patch 101751, 0.0*-2.0 returns inf rather than Tim Peters <tim.peters@gmail.com>* parents: 14869 diff changeset	924 /* Sort out special cases here instead of relying on pow() */
19457 6c2b7b624ef2 float_pow: Put all of the burden on the libm pow in normal Tim Peters <tim.peters@gmail.com> parents: 19343 diff changeset	925 if (iw == 0) { /* v0 is 1, even 00 */
41580 a68467cc06d3 Remove dead code. This code couldn't be reached because earlier in Neal Norwitz <nnorwitz@gmail.com> parents: 39642 diff changeset	926 return PyFloat_FromDouble(1.0);
15041 7eefde90ec0e SF bug 115831 and Ping's SF patch 101751, 0.0*-2.0 returns inf rather than Tim Peters <tim.peters@gmail.com>* parents: 14869 diff changeset	927 }
19457 6c2b7b624ef2 float_pow: Put all of the burden on the libm pow in normal Tim Peters <tim.peters@gmail.com> parents: 19343 diff changeset	928 if (iv == 0.0) { /* 0*w is error if w<0, else 1 /
15041 7eefde90ec0e SF bug 115831 and Ping's SF patch 101751, 0.0*-2.0 returns inf rather than Tim Peters <tim.peters@gmail.com>* parents: 14869 diff changeset	929 if (iw < 0.0) {
7eefde90ec0e SF bug 115831 and Ping's SF patch 101751, 0.0*-2.0 returns inf rather than Tim Peters <tim.peters@gmail.com>* parents: 14869 diff changeset	930 PyErr_SetString(PyExc_ZeroDivisionError,
15318 8aa947e1eee8 Ka-Ping Yee <ping@lfw.org>: Fred Drake <fdrake@acm.org> parents: 15041 diff changeset	931 "0.0 cannot be raised to a negative power");
15041 7eefde90ec0e SF bug 115831 and Ping's SF patch 101751, 0.0*-2.0 returns inf rather than Tim Peters <tim.peters@gmail.com>* parents: 14869 diff changeset	932 return NULL;
7eefde90ec0e SF bug 115831 and Ping's SF patch 101751, 0.0*-2.0 returns inf rather than Tim Peters <tim.peters@gmail.com>* parents: 14869 diff changeset	933 }
7eefde90ec0e SF bug 115831 and Ping's SF patch 101751, 0.0*-2.0 returns inf rather than Tim Peters <tim.peters@gmail.com>* parents: 14869 diff changeset	934 return PyFloat_FromDouble(0.0);
7eefde90ec0e SF bug 115831 and Ping's SF patch 101751, 0.0*-2.0 returns inf rather than Tim Peters <tim.peters@gmail.com>* parents: 14869 diff changeset	935 }
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	936 if (iv == 1.0) { /* 1w is 1, even 1inf and 1*nan /
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	937 return PyFloat_FromDouble(1.0);
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	938 }
29252 0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	939 if (iv < 0.0) {
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	940 /* Whether this is an error is a mess, and bumps into libm
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	941 * bugs so we have to figure it out ourselves.
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	942 */
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	943 if (iw != floor(iw)) {
44488 94eeaeeb3ce9 Continue rolling back pep-3141 changes that changed behavior from 2.5. This Jeffrey Yasskin <jyasskin@gmail.com> parents: 44432 diff changeset	944 PyErr_SetString(PyExc_ValueError, "negative number "
94eeaeeb3ce9 Continue rolling back pep-3141 changes that changed behavior from 2.5. This Jeffrey Yasskin <jyasskin@gmail.com> parents: 44432 diff changeset	945 "cannot be raised to a fractional power");
94eeaeeb3ce9 Continue rolling back pep-3141 changes that changed behavior from 2.5. This Jeffrey Yasskin <jyasskin@gmail.com> parents: 44432 diff changeset	946 return NULL;
29252 0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	947 }
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	948 /* iw is an exact integer, albeit perhaps a very large one.
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	949 * -1 raised to an exact integer should never be exceptional.
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	950 * Alas, some libms (chiefly glibc as of early 2003) return
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	951 * NaN and set EDOM on pow(-1, large_int) if the int doesn't
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	952 * happen to be representable in a C integer. That's a
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	953 * bug; we let that slide in math.pow() (which currently
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	954 * reflects all platform accidents), but not for Python's **.
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	955 */
38293 688f25757104 Added a new macro, Py_IS_FINITE(X). On windows there is an intrinsic for this and it is more efficient than to use !Py_IS_INFINITE(X) && !Py_IS_NAN(X). No change on other platforms Kristján Valur Jónsson <kristjan@ccpgames.com> parents: 37815 diff changeset	956 if (iv == -1.0 && Py_IS_FINITE(iw)) {
29252 0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	957 /* Return 1 if iw is even, -1 if iw is odd; there's
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	958 * no guarantee that any C integral type is big
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	959 * enough to hold iw, so we have to check this
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	960 * indirectly.
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	961 */
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	962 ix = floor(iw * 0.5) * 2.0;
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	963 return PyFloat_FromDouble(ix == iw ? 1.0 : -1.0);
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	964 }
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	965 /* Else iv != -1.0, and overflow or underflow are possible.
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	966 * Unless we're to write pow() ourselves, we have to trust
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	967 * the platform to do this correctly.
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	968 */
3984 0613f17dcfd8 Correct wrong calculation of pow(0.0, 0.0, negative_number) Guido van Rossum <guido@python.org> parents: 3704 diff changeset	969 }
19457 6c2b7b624ef2 float_pow: Put all of the burden on the libm pow in normal Tim Peters <tim.peters@gmail.com> parents: 19343 diff changeset	970 errno = 0;
6c2b7b624ef2 float_pow: Put all of the burden on the libm pow in normal Tim Peters <tim.peters@gmail.com> parents: 19343 diff changeset	971 PyFPE_START_PROTECT("pow", return NULL)
6c2b7b624ef2 float_pow: Put all of the burden on the libm pow in normal Tim Peters <tim.peters@gmail.com> parents: 19343 diff changeset	972 ix = pow(iv, iw);
6c2b7b624ef2 float_pow: Put all of the burden on the libm pow in normal Tim Peters <tim.peters@gmail.com> parents: 19343 diff changeset	973 PyFPE_END_PROTECT(ix)
22228 4b6eda7d0c8f backport tim_one's checkin of Michael W. Hudson <mwh@python.net> parents: 21354 diff changeset	974 Py_ADJUST_ERANGE1(ix);
39642 981181d2a4fe Reverting the patch that tried to fix the issue whereby x*2 raises Alex Martelli <aleaxit@gmail.com>* parents: 39639 diff changeset	975 if (errno != 0) {
29252 0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	976 /* We don't expect any errno value other than ERANGE, but
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	977 * the range of libm bugs appears unbounded.
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	978 */
39642 981181d2a4fe Reverting the patch that tried to fix the issue whereby x*2 raises Alex Martelli <aleaxit@gmail.com>* parents: 39639 diff changeset	979 PyErr_SetFromErrno(errno == ERANGE ? PyExc_OverflowError :
981181d2a4fe Reverting the patch that tried to fix the issue whereby x*2 raises Alex Martelli <aleaxit@gmail.com>* parents: 39639 diff changeset	980 PyExc_ValueError);
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	981 return NULL;
27 82c7bab78bb1 New errors. Guido van Rossum <guido@python.org> parents: 6 diff changeset	982 }
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	983 return PyFloat_FromDouble(ix);
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	984 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	985
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	986 static PyObject *
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	987 float_neg(PyFloatObject *v)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	988 {
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	989 return PyFloat_FromDouble(-v->ob_fval);
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	990 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	991
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	992 static PyObject *
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	993 float_abs(PyFloatObject *v)
227 7ec6058b539b Added (dummy) divmod and (functional) abs. Guido van Rossum <guido@python.org> parents: 145 diff changeset	994 {
20826 3751366c2f39 float_abs() again: Guido pointed out that this could screw up in the Tim Peters <tim.peters@gmail.com> parents: 20823 diff changeset	995 return PyFloat_FromDouble(fabs(v->ob_fval));
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	996 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	997
239 fda973f2a512 Added nonzero test Guido van Rossum <guido@python.org> parents: 227 diff changeset	998 static int
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	999 float_nonzero(PyFloatObject *v)
239 fda973f2a512 Added nonzero test Guido van Rossum <guido@python.org> parents: 227 diff changeset	1000 {
fda973f2a512 Added nonzero test Guido van Rossum <guido@python.org> parents: 227 diff changeset	1001 return v->ob_fval != 0.0;
fda973f2a512 Added nonzero test Guido van Rossum <guido@python.org> parents: 227 diff changeset	1002 }
fda973f2a512 Added nonzero test Guido van Rossum <guido@python.org> parents: 227 diff changeset	1003
1313 6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c. Guido van Rossum <guido@python.org> parents: 1271 diff changeset	1004 static int
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	1005 float_coerce(PyObject pv, PyObject pw)
955 03de67080c95 * classobject.[ch], {float,long,int}object.c, bltinmodule.c: Guido van Rossum <guido@python.org> parents: 795 diff changeset	1006 {
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	1007 if (PyInt_Check(*pw)) {
d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	1008 long x = PyInt_AsLong(*pw);
d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	1009 *pw = PyFloat_FromDouble((double)x);
d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	1010 Py_INCREF(*pv);
955 03de67080c95 * classobject.[ch], {float,long,int}object.c, bltinmodule.c: Guido van Rossum <guido@python.org> parents: 795 diff changeset	1011 return 0;
03de67080c95 * classobject.[ch], {float,long,int}object.c, bltinmodule.c: Guido van Rossum <guido@python.org> parents: 795 diff changeset	1012 }
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	1013 else if (PyLong_Check(*pw)) {
27484 5ba7934a7ba0 Fix SF bug# 676155, RuntimeWarning with tp_compare Neal Norwitz <nnorwitz@gmail.com> parents: 26328 diff changeset	1014 double x = PyLong_AsDouble(*pw);
5ba7934a7ba0 Fix SF bug# 676155, RuntimeWarning with tp_compare Neal Norwitz <nnorwitz@gmail.com> parents: 26328 diff changeset	1015 if (x == -1.0 && PyErr_Occurred())
5ba7934a7ba0 Fix SF bug# 676155, RuntimeWarning with tp_compare Neal Norwitz <nnorwitz@gmail.com> parents: 26328 diff changeset	1016 return -1;
5ba7934a7ba0 Fix SF bug# 676155, RuntimeWarning with tp_compare Neal Norwitz <nnorwitz@gmail.com> parents: 26328 diff changeset	1017 *pw = PyFloat_FromDouble(x);
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	1018 Py_INCREF(*pv);
955 03de67080c95 * classobject.[ch], {float,long,int}object.c, bltinmodule.c: Guido van Rossum <guido@python.org> parents: 795 diff changeset	1019 return 0;
03de67080c95 * classobject.[ch], {float,long,int}object.c, bltinmodule.c: Guido van Rossum <guido@python.org> parents: 795 diff changeset	1020 }
19976 da00188d5270 Add additional coercion support for "self subtypes" to int, long, Guido van Rossum <guido@python.org> parents: 19889 diff changeset	1021 else if (PyFloat_Check(*pw)) {
da00188d5270 Add additional coercion support for "self subtypes" to int, long, Guido van Rossum <guido@python.org> parents: 19889 diff changeset	1022 Py_INCREF(*pv);
da00188d5270 Add additional coercion support for "self subtypes" to int, long, Guido van Rossum <guido@python.org> parents: 19889 diff changeset	1023 Py_INCREF(*pw);
da00188d5270 Add additional coercion support for "self subtypes" to int, long, Guido van Rossum <guido@python.org> parents: 19889 diff changeset	1024 return 0;
da00188d5270 Add additional coercion support for "self subtypes" to int, long, Guido van Rossum <guido@python.org> parents: 19889 diff changeset	1025 }
955 03de67080c95 * classobject.[ch], {float,long,int}object.c, bltinmodule.c: Guido van Rossum <guido@python.org> parents: 795 diff changeset	1026 return 1; /* Can't do it */
03de67080c95 * classobject.[ch], {float,long,int}object.c, bltinmodule.c: Guido van Rossum <guido@python.org> parents: 795 diff changeset	1027 }
03de67080c95 * classobject.[ch], {float,long,int}object.c, bltinmodule.c: Guido van Rossum <guido@python.org> parents: 795 diff changeset	1028
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	1029 static PyObject *
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1030 float_is_integer(PyObject *v)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1031 {
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1032 double x = PyFloat_AsDouble(v);
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1033 PyObject *o;
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1034
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1035 if (x == -1.0 && PyErr_Occurred())
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1036 return NULL;
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1037 if (!Py_IS_FINITE(x))
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1038 Py_RETURN_FALSE;
46792 8baeba13ae93 Issue #2801: fix bug in float.is_integer where ValueError Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	1039 errno = 0;
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1040 PyFPE_START_PROTECT("is_integer", return NULL)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1041 o = (floor(x) == x) ? Py_True : Py_False;
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1042 PyFPE_END_PROTECT(x)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1043 if (errno != 0) {
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1044 PyErr_SetFromErrno(errno == ERANGE ? PyExc_OverflowError :
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1045 PyExc_ValueError);
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1046 return NULL;
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1047 }
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1048 Py_INCREF(o);
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1049 return o;
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1050 }
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1051
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1052 #if 0
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1053 static PyObject *
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1054 float_is_inf(PyObject *v)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1055 {
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1056 double x = PyFloat_AsDouble(v);
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1057 if (x == -1.0 && PyErr_Occurred())
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1058 return NULL;
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1059 return PyBool_FromLong((long)Py_IS_INFINITY(x));
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1060 }
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1061
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1062 static PyObject *
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1063 float_is_nan(PyObject *v)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1064 {
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1065 double x = PyFloat_AsDouble(v);
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1066 if (x == -1.0 && PyErr_Occurred())
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1067 return NULL;
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1068 return PyBool_FromLong((long)Py_IS_NAN(x));
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1069 }
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1070
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1071 static PyObject *
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1072 float_is_finite(PyObject *v)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1073 {
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1074 double x = PyFloat_AsDouble(v);
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1075 if (x == -1.0 && PyErr_Occurred())
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1076 return NULL;
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1077 return PyBool_FromLong((long)Py_IS_FINITE(x));
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1078 }
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1079 #endif
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1080
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1081 static PyObject *
44432 4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1082 float_trunc(PyObject *v)
1049 2ed511171809 Made builtins int(), long(), float(), oct() and hex() more generic. Guido van Rossum <guido@python.org> parents: 955 diff changeset	1083 {
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	1084 double x = PyFloat_AsDouble(v);
18838 a8575f358b9f SF bug #444510: int() should guarantee truncation. Tim Peters <tim.peters@gmail.com> parents: 17707 diff changeset	1085 double wholepart; /* integral portion of x, rounded toward 0 */
a8575f358b9f SF bug #444510: int() should guarantee truncation. Tim Peters <tim.peters@gmail.com> parents: 17707 diff changeset	1086
a8575f358b9f SF bug #444510: int() should guarantee truncation. Tim Peters <tim.peters@gmail.com> parents: 17707 diff changeset	1087 (void)modf(x, &wholepart);
26328 f3a69037fdf0 float_int(): Some systems raise an exception if a double is cast to Tim Peters <tim.peters@gmail.com> parents: 26291 diff changeset	1088 /* Try to get out cheap if this fits in a Python int. The attempt
f3a69037fdf0 float_int(): Some systems raise an exception if a double is cast to Tim Peters <tim.peters@gmail.com> parents: 26291 diff changeset	1089 * to cast to long must be protected, as C doesn't define what
f3a69037fdf0 float_int(): Some systems raise an exception if a double is cast to Tim Peters <tim.peters@gmail.com> parents: 26291 diff changeset	1090 * happens if the double is too big to fit in a long. Some rare
f3a69037fdf0 float_int(): Some systems raise an exception if a double is cast to Tim Peters <tim.peters@gmail.com> parents: 26291 diff changeset	1091 * systems raise an exception then (RISCOS was mentioned as one,
f3a69037fdf0 float_int(): Some systems raise an exception if a double is cast to Tim Peters <tim.peters@gmail.com> parents: 26291 diff changeset	1092 * and someone using a non-default option on Sun also bumped into
f3a69037fdf0 float_int(): Some systems raise an exception if a double is cast to Tim Peters <tim.peters@gmail.com> parents: 26291 diff changeset	1093 * that). Note that checking for >= and <= LONG_{MIN,MAX} would
f3a69037fdf0 float_int(): Some systems raise an exception if a double is cast to Tim Peters <tim.peters@gmail.com> parents: 26291 diff changeset	1094 * still be vulnerable: if a long has more bits of precision than
f3a69037fdf0 float_int(): Some systems raise an exception if a double is cast to Tim Peters <tim.peters@gmail.com> parents: 26291 diff changeset	1095 * a double, casting MIN/MAX to double may yield an approximation,
f3a69037fdf0 float_int(): Some systems raise an exception if a double is cast to Tim Peters <tim.peters@gmail.com> parents: 26291 diff changeset	1096 * and if that's rounded up, then, e.g., wholepart=LONG_MAX+1 would
f3a69037fdf0 float_int(): Some systems raise an exception if a double is cast to Tim Peters <tim.peters@gmail.com> parents: 26291 diff changeset	1097 * yield true from the C expression wholepart<=LONG_MAX, despite
f3a69037fdf0 float_int(): Some systems raise an exception if a double is cast to Tim Peters <tim.peters@gmail.com> parents: 26291 diff changeset	1098 * that wholepart is actually greater than LONG_MAX.
f3a69037fdf0 float_int(): Some systems raise an exception if a double is cast to Tim Peters <tim.peters@gmail.com> parents: 26291 diff changeset	1099 */
f3a69037fdf0 float_int(): Some systems raise an exception if a double is cast to Tim Peters <tim.peters@gmail.com> parents: 26291 diff changeset	1100 if (LONG_MIN < wholepart && wholepart < LONG_MAX) {
f3a69037fdf0 float_int(): Some systems raise an exception if a double is cast to Tim Peters <tim.peters@gmail.com> parents: 26291 diff changeset	1101 const long aslong = (long)wholepart;
f3a69037fdf0 float_int(): Some systems raise an exception if a double is cast to Tim Peters <tim.peters@gmail.com> parents: 26291 diff changeset	1102 return PyInt_FromLong(aslong);
20654 edd9d0b3c47e SF patch #474590 -- RISC OS support Guido van Rossum <guido@python.org> parents: 20277 diff changeset	1103 }
26328 f3a69037fdf0 float_int(): Some systems raise an exception if a double is cast to Tim Peters <tim.peters@gmail.com> parents: 26291 diff changeset	1104 return PyLong_FromDouble(wholepart);
1049 2ed511171809 Made builtins int(), long(), float(), oct() and hex() more generic. Guido van Rossum <guido@python.org> parents: 955 diff changeset	1105 }
2ed511171809 Made builtins int(), long(), float(), oct() and hex() more generic. Guido van Rossum <guido@python.org> parents: 955 diff changeset	1106
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	1107 static PyObject *
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	1108 float_float(PyObject *v)
1049 2ed511171809 Made builtins int(), long(), float(), oct() and hex() more generic. Guido van Rossum <guido@python.org> parents: 955 diff changeset	1109 {
34931 9a1b1e1ae653 Make subclasses of int, long, complex, float, and unicode perform type Brett Cannon <bcannon@gmail.com> parents: 33549 diff changeset	1110 if (PyFloat_CheckExact(v))
9a1b1e1ae653 Make subclasses of int, long, complex, float, and unicode perform type Brett Cannon <bcannon@gmail.com> parents: 33549 diff changeset	1111 Py_INCREF(v);
9a1b1e1ae653 Make subclasses of int, long, complex, float, and unicode perform type Brett Cannon <bcannon@gmail.com> parents: 33549 diff changeset	1112 else
9a1b1e1ae653 Make subclasses of int, long, complex, float, and unicode perform type Brett Cannon <bcannon@gmail.com> parents: 33549 diff changeset	1113 v = PyFloat_FromDouble(((PyFloatObject *)v)->ob_fval);
1049 2ed511171809 Made builtins int(), long(), float(), oct() and hex() more generic. Guido van Rossum <guido@python.org> parents: 955 diff changeset	1114 return v;
2ed511171809 Made builtins int(), long(), float(), oct() and hex() more generic. Guido van Rossum <guido@python.org> parents: 955 diff changeset	1115 }
2ed511171809 Made builtins int(), long(), float(), oct() and hex() more generic. Guido van Rossum <guido@python.org> parents: 955 diff changeset	1116
47966 97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1117 /* turn ASCII hex characters into integer values and vice versa */
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1118
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1119 static char
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1120 char_from_hex(int x)
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1121 {
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1122 assert(0 <= x && x < 16);
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1123 return "0123456789abcdef"[x];
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1124 }
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1125
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1126 static int
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1127 hex_from_char(char c) {
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1128 int x;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1129 assert(isxdigit(c));
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1130 switch(c) {
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1131 case '0':
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1132 x = 0;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1133 break;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1134 case '1':
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1135 x = 1;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1136 break;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1137 case '2':
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1138 x = 2;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1139 break;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1140 case '3':
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1141 x = 3;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1142 break;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1143 case '4':
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1144 x = 4;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1145 break;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1146 case '5':
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1147 x = 5;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1148 break;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1149 case '6':
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1150 x = 6;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1151 break;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1152 case '7':
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1153 x = 7;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1154 break;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1155 case '8':
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1156 x = 8;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1157 break;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1158 case '9':
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1159 x = 9;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1160 break;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1161 case 'a':
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1162 case 'A':
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1163 x = 10;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1164 break;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1165 case 'b':
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1166 case 'B':
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1167 x = 11;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1168 break;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1169 case 'c':
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1170 case 'C':
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1171 x = 12;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1172 break;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1173 case 'd':
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1174 case 'D':
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1175 x = 13;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1176 break;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1177 case 'e':
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1178 case 'E':
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1179 x = 14;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1180 break;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1181 case 'f':
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1182 case 'F':
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1183 x = 15;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1184 break;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1185 default:
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1186 x = -1;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1187 break;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1188 }
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1189 return x;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1190 }
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1191
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1192 /* convert a float to a hexadecimal string */
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1193
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1194 /* TOHEX_NBITS is DBL_MANT_DIG rounded up to the next integer
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1195 of the form 4k+1. */
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1196 #define TOHEX_NBITS DBL_MANT_DIG + 3 - (DBL_MANT_DIG+2)%4
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1197
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1198 static PyObject *
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1199 float_hex(PyObject *v)
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1200 {
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1201 double x, m;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1202 int e, shift, i, si, esign;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1203 /* Space for 1+(TOHEX_NBITS-1)/4 digits, a decimal point, and the
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1204 trailing NUL byte. */
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1205 char s[(TOHEX_NBITS-1)/4+3];
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1206
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1207 CONVERT_TO_DOUBLE(v, x);
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1208
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1209 if (Py_IS_NAN(x) \|\| Py_IS_INFINITY(x))
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1210 return float_str((PyFloatObject *)v);
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1211
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1212 if (x == 0.0) {
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1213 if(copysign(1.0, x) == -1.0)
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1214 return PyString_FromString("-0x0.0p+0");
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1215 else
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1216 return PyString_FromString("0x0.0p+0");
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1217 }
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1218
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1219 m = frexp(fabs(x), &e);
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1220 shift = 1 - MAX(DBL_MIN_EXP - e, 0);
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1221 m = ldexp(m, shift);
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1222 e -= shift;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1223
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1224 si = 0;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1225 s[si] = char_from_hex((int)m);
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1226 si++;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1227 m -= (int)m;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1228 s[si] = '.';
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1229 si++;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1230 for (i=0; i < (TOHEX_NBITS-1)/4; i++) {
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1231 m *= 16.0;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1232 s[si] = char_from_hex((int)m);
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1233 si++;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1234 m -= (int)m;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1235 }
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1236 s[si] = '\0';
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1237
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1238 if (e < 0) {
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1239 esign = (int)'-';
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1240 e = -e;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1241 }
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1242 else
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1243 esign = (int)'+';
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1244
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1245 if (x < 0.0)
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1246 return PyString_FromFormat("-0x%sp%c%d", s, esign, e);
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1247 else
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1248 return PyString_FromFormat("0x%sp%c%d", s, esign, e);
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1249 }
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1250
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1251 PyDoc_STRVAR(float_hex_doc,
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1252 "float.hex() -> string\n\
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1253 \n\
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1254 Return a hexadecimal representation of a floating-point number.\n\
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1255 >>> (-0.1).hex()\n\
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1256 '-0x1.999999999999ap-4'\n\
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1257 >>> 3.14159.hex()\n\
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1258 '0x1.921f9f01b866ep+1'");
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1259
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1260 /* Convert a hexadecimal string to a float. */
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1261
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1262 static PyObject *
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1263 float_fromhex(PyObject cls, PyObject arg)
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1264 {
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1265 PyObject result_as_float, result;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1266 double x;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1267 long exp, top_exp, lsb, key_digit;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1268 char s, coeff_start, s_store, coeff_end, exp_start, s_end;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1269 int half_eps, digit, round_up, sign=1;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1270 Py_ssize_t length, ndigits, fdigits, i;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1271
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1272 /*
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1273 * For the sake of simplicity and correctness, we impose an artificial
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1274 * limit on ndigits, the total number of hex digits in the coefficient
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1275 * The limit is chosen to ensure that, writing exp for the exponent,
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1276 *
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1277 * (1) if exp > LONG_MAX/2 then the value of the hex string is
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1278 * guaranteed to overflow (provided it's nonzero)
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1279 *
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1280 * (2) if exp < LONG_MIN/2 then the value of the hex string is
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1281 * guaranteed to underflow to 0.
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1282 *
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1283 * (3) if LONG_MIN/2 <= exp <= LONG_MAX/2 then there's no danger of
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1284 * overflow in the calculation of exp and top_exp below.
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1285 *
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1286 * More specifically, ndigits is assumed to satisfy the following
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1287 * inequalities:
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1288 *
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1289 * 4*ndigits <= DBL_MIN_EXP - DBL_MANT_DIG - LONG_MIN/2
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1290 * 4*ndigits <= LONG_MAX/2 + 1 - DBL_MAX_EXP
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1291 *
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1292 * If either of these inequalities is not satisfied, a ValueError is
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1293 * raised. Otherwise, write x for the value of the hex string, and
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1294 * assume x is nonzero. Then
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1295 *
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1296 * 2*(exp-4ndigits) <= \|x\| < 2*(exp+4ndigits).
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1297 *
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1298 * Now if exp > LONG_MAX/2 then:
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1299 *
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1300 * exp - 4*ndigits >= LONG_MAX/2 + 1 - (LONG_MAX/2 + 1 - DBL_MAX_EXP)
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1301 * = DBL_MAX_EXP
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1302 *
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1303 * so \|x\| >= 2**DBL_MAX_EXP, which is too large to be stored in C
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1304 * double, so overflows. If exp < LONG_MIN/2, then
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1305 *
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1306 * exp + 4*ndigits <= LONG_MIN/2 - 1 + (
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1307 * DBL_MIN_EXP - DBL_MANT_DIG - LONG_MIN/2)
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1308 * = DBL_MIN_EXP - DBL_MANT_DIG - 1
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1309 *
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1310 * and so \|x\| < 2**(DBL_MIN_EXP-DBL_MANT_DIG-1), hence underflows to 0
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1311 * when converted to a C double.
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1312 *
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1313 * It's easy to show that if LONG_MIN/2 <= exp <= LONG_MAX/2 then both
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1314 * exp+4ndigits and exp-4ndigits are within the range of a long.
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1315 */
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1316
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1317 if (PyString_AsStringAndSize(arg, &s, &length))
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1318 return NULL;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1319 s_end = s + length;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1320
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1321 /********************
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1322 * Parse the string *
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1323 ********************/
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1324
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1325 /* leading whitespace and optional sign */
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1326 while (isspace(*s))
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1327 s++;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1328 if (*s == '-') {
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1329 s++;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1330 sign = -1;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1331 }
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1332 else if (*s == '+')
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1333 s++;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1334
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1335 /* infinities and nans */
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1336 if (PyOS_mystrnicmp(s, "nan", 4) == 0) {
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1337 x = Py_NAN;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1338 goto finished;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1339 }
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1340 if (PyOS_mystrnicmp(s, "inf", 4) == 0 \|\|
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1341 PyOS_mystrnicmp(s, "infinity", 9) == 0) {
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1342 x = sign*Py_HUGE_VAL;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1343 goto finished;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1344 }
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1345
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1346 /* [0x] */
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1347 s_store = s;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1348 if (*s == '0') {
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1349 s++;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1350 if (tolower(*s) == (int)'x')
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1351 s++;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1352 else
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1353 s = s_store;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1354 }
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1355
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1356 /* coefficient: <integer> [. <fraction>] */
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1357 coeff_start = s;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1358 while (isxdigit(*s))
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1359 s++;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1360 s_store = s;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1361 if (*s == '.') {
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1362 s++;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1363 while (isxdigit(*s))
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1364 s++;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1365 coeff_end = s-1;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1366 }
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1367 else
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1368 coeff_end = s;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1369
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1370 /* ndigits = total # of hex digits; fdigits = # after point */
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1371 ndigits = coeff_end - coeff_start;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1372 fdigits = coeff_end - s_store;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1373 if (ndigits == 0)
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1374 goto parse_error;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1375 if (ndigits > MIN(DBL_MIN_EXP - DBL_MANT_DIG - LONG_MIN/2,
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1376 LONG_MAX/2 + 1 - DBL_MAX_EXP)/4)
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1377 goto insane_length_error;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1378
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1379 /* [p <exponent>] */
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1380 if (tolower(*s) == (int)'p') {
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1381 s++;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1382 exp_start = s;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1383 if (s == '-' \|\| s == '+')
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1384 s++;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1385 if (!isdigit(*s))
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1386 goto parse_error;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1387 s++;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1388 while (isdigit(*s))
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1389 s++;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1390 exp = strtol(exp_start, NULL, 10);
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1391 }
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1392 else
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1393 exp = 0;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1394
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1395 /* optional trailing whitespace leading to the end of the string */
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1396 while (isspace(*s))
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1397 s++;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1398 if (s != s_end)
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1399 goto parse_error;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1400
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1401 /* for 0 <= j < ndigits, HEX_DIGIT(j) gives the jth most significant digit */
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1402 #define HEX_DIGIT(j) hex_from_char(*((j) < fdigits ? \
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1403 coeff_end-(j) : \
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1404 coeff_end-1-(j)))
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1405
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1406 /*******************************************
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1407 * Compute rounded value of the hex string *
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1408 *******************************************/
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1409
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1410 /* Discard leading zeros, and catch extreme overflow and underflow */
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1411 while (ndigits > 0 && HEX_DIGIT(ndigits-1) == 0)
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1412 ndigits--;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1413 if (ndigits == 0 \|\| exp < LONG_MIN/2) {
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1414 x = sign * 0.0;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1415 goto finished;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1416 }
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1417 if (exp > LONG_MAX/2)
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1418 goto overflow_error;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1419
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1420 /* Adjust exponent for fractional part. */
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1421 exp = exp - 4*((long)fdigits);
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1422
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1423 /* top_exp = 1 more than exponent of most sig. bit of coefficient */
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1424 top_exp = exp + 4*((long)ndigits - 1);
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1425 for (digit = HEX_DIGIT(ndigits-1); digit != 0; digit /= 2)
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1426 top_exp++;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1427
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1428 /* catch almost all nonextreme cases of overflow and underflow here */
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1429 if (top_exp < DBL_MIN_EXP - DBL_MANT_DIG) {
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1430 x = sign * 0.0;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1431 goto finished;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1432 }
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1433 if (top_exp > DBL_MAX_EXP)
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1434 goto overflow_error;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1435
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1436 /* lsb = exponent of least significant bit of the rounded value.
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1437 This is top_exp - DBL_MANT_DIG unless result is subnormal. */
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1438 lsb = MAX(top_exp, (long)DBL_MIN_EXP) - DBL_MANT_DIG;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1439
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1440 x = 0.0;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1441 if (exp >= lsb) {
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1442 /* no rounding required */
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1443 for (i = ndigits-1; i >= 0; i--)
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1444 x = 16.0*x + HEX_DIGIT(i);
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1445 x = sign * ldexp(x, (int)(exp));
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1446 goto finished;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1447 }
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1448 /* rounding required. key_digit is the index of the hex digit
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1449 containing the first bit to be rounded away. */
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1450 half_eps = 1 << (int)((lsb - exp - 1) % 4);
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1451 key_digit = (lsb - exp - 1) / 4;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1452 for (i = ndigits-1; i > key_digit; i--)
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1453 x = 16.0*x + HEX_DIGIT(i);
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1454 digit = HEX_DIGIT(key_digit);
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1455 x = 16.0x + (double)(digit & (16-2half_eps));
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1456
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1457 /* round-half-even: round up if bit lsb-1 is 1 and at least one of
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1458 bits lsb, lsb-2, lsb-3, lsb-4, ... is 1. */
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1459 if ((digit & half_eps) != 0) {
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1460 round_up = 0;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1461 if ((digit & (3*half_eps-1)) != 0 \|\|
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1462 (half_eps == 8 && (HEX_DIGIT(key_digit+1) & 1) != 0))
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1463 round_up = 1;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1464 else
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1465 for (i = key_digit-1; i >= 0; i--)
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1466 if (HEX_DIGIT(i) != 0) {
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1467 round_up = 1;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1468 break;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1469 }
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1470 if (round_up == 1) {
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1471 x += 2*half_eps;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1472 if (top_exp == DBL_MAX_EXP &&
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1473 x == ldexp((double)(2*half_eps), DBL_MANT_DIG))
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1474 /* overflow corner case: pre-rounded value <
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1475 2DBL_MAX_EXP; rounded=2DBL_MAX_EXP. */
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1476 goto overflow_error;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1477 }
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1478 }
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1479 x = sign * ldexp(x, (int)(exp+4*key_digit));
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1480
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1481 finished:
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1482 result_as_float = Py_BuildValue("(d)", x);
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1483 if (result_as_float == NULL)
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1484 return NULL;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1485 result = PyObject_CallObject(cls, result_as_float);
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1486 Py_DECREF(result_as_float);
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1487 return result;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1488
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1489 overflow_error:
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1490 PyErr_SetString(PyExc_OverflowError,
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1491 "hexadecimal value too large to represent as a float");
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1492 return NULL;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1493
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1494 parse_error:
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1495 PyErr_SetString(PyExc_ValueError,
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1496 "invalid hexadecimal floating-point string");
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1497 return NULL;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1498
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1499 insane_length_error:
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1500 PyErr_SetString(PyExc_ValueError,
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1501 "hexadecimal string too long to convert");
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1502 return NULL;
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1503 }
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1504
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1505 PyDoc_STRVAR(float_fromhex_doc,
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1506 "float.fromhex(string) -> float\n\
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1507 \n\
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1508 Create a floating-point number from a hexadecimal string.\n\
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1509 >>> float.fromhex('0x1.ffffp10')\n\
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1510 2047.984375\n\
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1511 >>> float.fromhex('-0x1p-1074')\n\
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1512 -4.9406564584124654e-324");
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1513
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1514
45024 f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1515 static PyObject *
45094 beea73ca2b88 Issue #1996: float.as_integer_ratio() should return fraction in lowest terms. Raymond Hettinger <python@rcn.com> parents: 45060 diff changeset	1516 float_as_integer_ratio(PyObject v, PyObject unused)
45024 f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1517 {
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1518 double self;
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1519 double float_part;
45099 d0b31f24694d Fix int/long typecase. Add check for non-binary floating point. Raymond Hettinger <python@rcn.com> parents: 45096 diff changeset	1520 int exponent;
45100 0b4e8afed663 Add protection from weirdness while scaling the mantissa to an integer. Raymond Hettinger <python@rcn.com> parents: 45099 diff changeset	1521 int i;
45094 beea73ca2b88 Issue #1996: float.as_integer_ratio() should return fraction in lowest terms. Raymond Hettinger <python@rcn.com> parents: 45060 diff changeset	1522
45024 f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1523 PyObject *prev;
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1524 PyObject *py_exponent = NULL;
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1525 PyObject *numerator = NULL;
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1526 PyObject *denominator = NULL;
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1527 PyObject *result_pair = NULL;
45094 beea73ca2b88 Issue #1996: float.as_integer_ratio() should return fraction in lowest terms. Raymond Hettinger <python@rcn.com> parents: 45060 diff changeset	1528 PyNumberMethods *long_methods = PyLong_Type.tp_as_number;
45024 f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1529
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1530 #define INPLACE_UPDATE(obj, call) \
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1531 prev = obj; \
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1532 obj = call; \
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1533 Py_DECREF(prev); \
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1534
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1535 CONVERT_TO_DOUBLE(v, self);
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1536
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1537 if (Py_IS_INFINITY(self)) {
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1538 PyErr_SetString(PyExc_OverflowError,
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1539 "Cannot pass infinity to float.as_integer_ratio.");
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1540 return NULL;
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1541 }
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1542 #ifdef Py_NAN
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1543 if (Py_IS_NAN(self)) {
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1544 PyErr_SetString(PyExc_ValueError,
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1545 "Cannot pass nan to float.as_integer_ratio.");
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1546 return NULL;
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1547 }
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1548 #endif
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1549
45094 beea73ca2b88 Issue #1996: float.as_integer_ratio() should return fraction in lowest terms. Raymond Hettinger <python@rcn.com> parents: 45060 diff changeset	1550 PyFPE_START_PROTECT("as_integer_ratio", goto error);
beea73ca2b88 Issue #1996: float.as_integer_ratio() should return fraction in lowest terms. Raymond Hettinger <python@rcn.com> parents: 45060 diff changeset	1551 float_part = frexp(self, &exponent); /* self == float_part * 2*exponent exactly /
beea73ca2b88 Issue #1996: float.as_integer_ratio() should return fraction in lowest terms. Raymond Hettinger <python@rcn.com> parents: 45060 diff changeset	1552 PyFPE_END_PROTECT(float_part);
beea73ca2b88 Issue #1996: float.as_integer_ratio() should return fraction in lowest terms. Raymond Hettinger <python@rcn.com> parents: 45060 diff changeset	1553
45100 0b4e8afed663 Add protection from weirdness while scaling the mantissa to an integer. Raymond Hettinger <python@rcn.com> parents: 45099 diff changeset	1554 for (i=0; i<300 && float_part != floor(float_part) ; i++) {
45094 beea73ca2b88 Issue #1996: float.as_integer_ratio() should return fraction in lowest terms. Raymond Hettinger <python@rcn.com> parents: 45060 diff changeset	1555 float_part *= 2.0;
beea73ca2b88 Issue #1996: float.as_integer_ratio() should return fraction in lowest terms. Raymond Hettinger <python@rcn.com> parents: 45060 diff changeset	1556 exponent--;
45100 0b4e8afed663 Add protection from weirdness while scaling the mantissa to an integer. Raymond Hettinger <python@rcn.com> parents: 45099 diff changeset	1557 }
45101 f5e18c9bde70 Simpler solution to handling non-IEEE 754 environments. Raymond Hettinger <python@rcn.com> parents: 45100 diff changeset	1558 /* self == float_part * 2**exponent exactly and float_part is integral.
f5e18c9bde70 Simpler solution to handling non-IEEE 754 environments. Raymond Hettinger <python@rcn.com> parents: 45100 diff changeset	1559 If FLT_RADIX != 2, the 300 steps may leave a tiny fractional part
f5e18c9bde70 Simpler solution to handling non-IEEE 754 environments. Raymond Hettinger <python@rcn.com> parents: 45100 diff changeset	1560 to be truncated by PyLong_FromDouble(). */
45024 f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1561
45094 beea73ca2b88 Issue #1996: float.as_integer_ratio() should return fraction in lowest terms. Raymond Hettinger <python@rcn.com> parents: 45060 diff changeset	1562 numerator = PyLong_FromDouble(float_part);
45024 f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1563 if (numerator == NULL) goto error;
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1564
45100 0b4e8afed663 Add protection from weirdness while scaling the mantissa to an integer. Raymond Hettinger <python@rcn.com> parents: 45099 diff changeset	1565 /* fold in 2*exponent /
45095 5cb8288360e7 Integer ratio should return ints instead of longs whereever possible. Raymond Hettinger <python@rcn.com> parents: 45094 diff changeset	1566 denominator = PyLong_FromLong(1);
45099 d0b31f24694d Fix int/long typecase. Add check for non-binary floating point. Raymond Hettinger <python@rcn.com> parents: 45096 diff changeset	1567 py_exponent = PyLong_FromLong(labs((long)exponent));
45024 f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1568 if (py_exponent == NULL) goto error;
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1569 INPLACE_UPDATE(py_exponent,
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1570 long_methods->nb_lshift(denominator, py_exponent));
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1571 if (py_exponent == NULL) goto error;
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1572 if (exponent > 0) {
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1573 INPLACE_UPDATE(numerator,
45100 0b4e8afed663 Add protection from weirdness while scaling the mantissa to an integer. Raymond Hettinger <python@rcn.com> parents: 45099 diff changeset	1574 long_methods->nb_multiply(numerator, py_exponent));
45024 f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1575 if (numerator == NULL) goto error;
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1576 }
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1577 else {
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1578 Py_DECREF(denominator);
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1579 denominator = py_exponent;
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1580 py_exponent = NULL;
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1581 }
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1582
45095 5cb8288360e7 Integer ratio should return ints instead of longs whereever possible. Raymond Hettinger <python@rcn.com> parents: 45094 diff changeset	1583 /* Returns ints instead of longs where possible */
5cb8288360e7 Integer ratio should return ints instead of longs whereever possible. Raymond Hettinger <python@rcn.com> parents: 45094 diff changeset	1584 INPLACE_UPDATE(numerator, PyNumber_Int(numerator));
5cb8288360e7 Integer ratio should return ints instead of longs whereever possible. Raymond Hettinger <python@rcn.com> parents: 45094 diff changeset	1585 if (numerator == NULL) goto error;
5cb8288360e7 Integer ratio should return ints instead of longs whereever possible. Raymond Hettinger <python@rcn.com> parents: 45094 diff changeset	1586 INPLACE_UPDATE(denominator, PyNumber_Int(denominator));
5cb8288360e7 Integer ratio should return ints instead of longs whereever possible. Raymond Hettinger <python@rcn.com> parents: 45094 diff changeset	1587 if (denominator == NULL) goto error;
5cb8288360e7 Integer ratio should return ints instead of longs whereever possible. Raymond Hettinger <python@rcn.com> parents: 45094 diff changeset	1588
45024 f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1589 result_pair = PyTuple_Pack(2, numerator, denominator);
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1590
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1591 #undef INPLACE_UPDATE
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1592 error:
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1593 Py_XDECREF(py_exponent);
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1594 Py_XDECREF(denominator);
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1595 Py_XDECREF(numerator);
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1596 return result_pair;
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1597 }
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1598
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1599 PyDoc_STRVAR(float_as_integer_ratio_doc,
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1600 "float.as_integer_ratio() -> (int, int)\n"
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1601 "\n"
45094 beea73ca2b88 Issue #1996: float.as_integer_ratio() should return fraction in lowest terms. Raymond Hettinger <python@rcn.com> parents: 45060 diff changeset	1602 "Returns a pair of integers, whose ratio is exactly equal to the original\n"
beea73ca2b88 Issue #1996: float.as_integer_ratio() should return fraction in lowest terms. Raymond Hettinger <python@rcn.com> parents: 45060 diff changeset	1603 "float and with a positive denominator.\n"
beea73ca2b88 Issue #1996: float.as_integer_ratio() should return fraction in lowest terms. Raymond Hettinger <python@rcn.com> parents: 45060 diff changeset	1604 "Raises OverflowError on infinities and a ValueError on nans.\n"
45024 f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1605 "\n"
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1606 ">>> (10.0).as_integer_ratio()\n"
45094 beea73ca2b88 Issue #1996: float.as_integer_ratio() should return fraction in lowest terms. Raymond Hettinger <python@rcn.com> parents: 45060 diff changeset	1607 "(10, 1)\n"
45024 f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1608 ">>> (0.0).as_integer_ratio()\n"
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1609 "(0, 1)\n"
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1610 ">>> (-.25).as_integer_ratio()\n"
45094 beea73ca2b88 Issue #1996: float.as_integer_ratio() should return fraction in lowest terms. Raymond Hettinger <python@rcn.com> parents: 45060 diff changeset	1611 "(-1, 4)");
45024 f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1612
1049 2ed511171809 Made builtins int(), long(), float(), oct() and hex() more generic. Guido van Rossum <guido@python.org> parents: 955 diff changeset	1613
24280 1598a1e473e2 staticforward bites the dust. Jeremy Hylton <jeremy@alum.mit.edu> parents: 23832 diff changeset	1614 static PyObject *
19552 6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1615 float_subtype_new(PyTypeObject type, PyObject args, PyObject *kwds);
6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1616
18933 09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1617 static PyObject *
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1618 float_new(PyTypeObject type, PyObject args, PyObject *kwds)
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1619 {
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1620 PyObject x = Py_False; / Integer zero */
36675 dba6494735d0 Revert backwards-incompatible const changes. Martin v. Löwis <martin@v.loewis.de> parents: 36501 diff changeset	1621 static char *kwlist[] = {"x", 0};
18933 09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1622
19552 6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1623 if (type != &PyFloat_Type)
6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1624 return float_subtype_new(type, args, kwds); /* Wimp out */
18933 09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1625 if (!PyArg_ParseTupleAndKeywords(args, kwds, "\|O:float", kwlist, &x))
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1626 return NULL;
47527 52294af4b663 This reverts r63675 based on the discussion in this thread: Gregory P. Smith <greg@mad-scientist.com> parents: 47392 diff changeset	1627 if (PyString_Check(x))
18933 09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1628 return PyFloat_FromString(x, NULL);
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1629 return PyNumber_Float(x);
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1630 }
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1631
19552 6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1632 /* Wimpy, slow approach to tp_new calls for subtypes of float:
6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1633 first create a regular float from whatever arguments we got,
6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1634 then allocate a subtype instance and initialize its ob_fval
6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1635 from the regular float. The regular float is then thrown away.
6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1636 */
6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1637 static PyObject *
6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1638 float_subtype_new(PyTypeObject type, PyObject args, PyObject *kwds)
6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1639 {
37589 aeee85b6a5dd More C++-compliance. Note especially listobject.c - to get C++ to accept the Anthony Baxter <anthonybaxter@gmail.com> parents: 37304 diff changeset	1640 PyObject tmp, newobj;
19552 6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1641
6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1642 assert(PyType_IsSubtype(type, &PyFloat_Type));
6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1643 tmp = float_new(&PyFloat_Type, args, kwds);
6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1644 if (tmp == NULL)
6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1645 return NULL;
19889 733314fcfdaa Again perhaps the end of [#460020] bug or feature: unicode() and subclasses. Tim Peters <tim.peters@gmail.com> parents: 19879 diff changeset	1646 assert(PyFloat_CheckExact(tmp));
37589 aeee85b6a5dd More C++-compliance. Note especially listobject.c - to get C++ to accept the Anthony Baxter <anthonybaxter@gmail.com> parents: 37304 diff changeset	1647 newobj = type->tp_alloc(type, 0);
aeee85b6a5dd More C++-compliance. Note especially listobject.c - to get C++ to accept the Anthony Baxter <anthonybaxter@gmail.com> parents: 37304 diff changeset	1648 if (newobj == NULL) {
29641 4909aa64405f SF patch 703666: Several objects don't decref tmp on failure in subtype_new Raymond Hettinger <python@rcn.com> parents: 29252 diff changeset	1649 Py_DECREF(tmp);
19552 6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1650 return NULL;
29641 4909aa64405f SF patch 703666: Several objects don't decref tmp on failure in subtype_new Raymond Hettinger <python@rcn.com> parents: 29252 diff changeset	1651 }
37589 aeee85b6a5dd More C++-compliance. Note especially listobject.c - to get C++ to accept the Anthony Baxter <anthonybaxter@gmail.com> parents: 37304 diff changeset	1652 ((PyFloatObject )newobj)->ob_fval = ((PyFloatObject )tmp)->ob_fval;
19552 6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1653 Py_DECREF(tmp);
37589 aeee85b6a5dd More C++-compliance. Note especially listobject.c - to get C++ to accept the Anthony Baxter <anthonybaxter@gmail.com> parents: 37304 diff changeset	1654 return newobj;
19552 6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1655 }
6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1656
27521 17bfd5dbc0f1 Implement appropriate __getnewargs__ for all immutable subclassable builtin Guido van Rossum <guido@python.org> parents: 27484 diff changeset	1657 static PyObject *
17bfd5dbc0f1 Implement appropriate __getnewargs__ for all immutable subclassable builtin Guido van Rossum <guido@python.org> parents: 27484 diff changeset	1658 float_getnewargs(PyFloatObject *v)
17bfd5dbc0f1 Implement appropriate __getnewargs__ for all immutable subclassable builtin Guido van Rossum <guido@python.org> parents: 27484 diff changeset	1659 {
17bfd5dbc0f1 Implement appropriate __getnewargs__ for all immutable subclassable builtin Guido van Rossum <guido@python.org> parents: 27484 diff changeset	1660 return Py_BuildValue("(d)", v->ob_fval);
17bfd5dbc0f1 Implement appropriate __getnewargs__ for all immutable subclassable builtin Guido van Rossum <guido@python.org> parents: 27484 diff changeset	1661 }
17bfd5dbc0f1 Implement appropriate __getnewargs__ for all immutable subclassable builtin Guido van Rossum <guido@python.org> parents: 27484 diff changeset	1662
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1663 /* this is for the benefit of the pack/unpack routines below */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1664
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1665 typedef enum {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1666 unknown_format, ieee_big_endian_format, ieee_little_endian_format
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1667 } float_format_type;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1668
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1669 static float_format_type double_format, float_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1670 static float_format_type detected_double_format, detected_float_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1671
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1672 static PyObject *
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1673 float_getformat(PyTypeObject v, PyObject arg)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1674 {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1675 char* s;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1676 float_format_type r;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1677
47527 52294af4b663 This reverts r63675 based on the discussion in this thread: Gregory P. Smith <greg@mad-scientist.com> parents: 47392 diff changeset	1678 if (!PyString_Check(arg)) {
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1679 PyErr_Format(PyExc_TypeError,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1680 "__getformat__() argument must be string, not %.500s",
44350 26384b8180c7 #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, Py_TYPE and Py_REFCNT. Macros for b/w compatibility are available. Christian Heimes <christian@cheimes.de> parents: 44344 diff changeset	1681 Py_TYPE(arg)->tp_name);
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1682 return NULL;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1683 }
47527 52294af4b663 This reverts r63675 based on the discussion in this thread: Gregory P. Smith <greg@mad-scientist.com> parents: 47392 diff changeset	1684 s = PyString_AS_STRING(arg);
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1685 if (strcmp(s, "double") == 0) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1686 r = double_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1687 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1688 else if (strcmp(s, "float") == 0) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1689 r = float_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1690 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1691 else {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1692 PyErr_SetString(PyExc_ValueError,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1693 "__getformat__() argument 1 must be "
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1694 "'double' or 'float'");
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1695 return NULL;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1696 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1697
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1698 switch (r) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1699 case unknown_format:
47527 52294af4b663 This reverts r63675 based on the discussion in this thread: Gregory P. Smith <greg@mad-scientist.com> parents: 47392 diff changeset	1700 return PyString_FromString("unknown");
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1701 case ieee_little_endian_format:
47527 52294af4b663 This reverts r63675 based on the discussion in this thread: Gregory P. Smith <greg@mad-scientist.com> parents: 47392 diff changeset	1702 return PyString_FromString("IEEE, little-endian");
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1703 case ieee_big_endian_format:
47527 52294af4b663 This reverts r63675 based on the discussion in this thread: Gregory P. Smith <greg@mad-scientist.com> parents: 47392 diff changeset	1704 return PyString_FromString("IEEE, big-endian");
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1705 default:
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1706 Py_FatalError("insane float_format or double_format");
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1707 return NULL;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1708 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1709 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1710
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1711 PyDoc_STRVAR(float_getformat_doc,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1712 "float.__getformat__(typestr) -> string\n"
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1713 "\n"
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1714 "You probably don't want to use this function. It exists mainly to be\n"
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1715 "used in Python's test suite.\n"
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1716 "\n"
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1717 "typestr must be 'double' or 'float'. This function returns whichever of\n"
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1718 "'unknown', 'IEEE, big-endian' or 'IEEE, little-endian' best describes the\n"
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1719 "format of floating point numbers used by the C type named by typestr.");
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1720
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1721 static PyObject *
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1722 float_setformat(PyTypeObject v, PyObject args)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1723 {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1724 char* typestr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1725 char* format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1726 float_format_type f;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1727 float_format_type detected;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1728 float_format_type *p;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1729
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1730 if (!PyArg_ParseTuple(args, "ss:__setformat__", &typestr, &format))
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1731 return NULL;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1732
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1733 if (strcmp(typestr, "double") == 0) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1734 p = &double_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1735 detected = detected_double_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1736 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1737 else if (strcmp(typestr, "float") == 0) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1738 p = &float_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1739 detected = detected_float_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1740 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1741 else {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1742 PyErr_SetString(PyExc_ValueError,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1743 "__setformat__() argument 1 must "
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1744 "be 'double' or 'float'");
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1745 return NULL;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1746 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1747
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1748 if (strcmp(format, "unknown") == 0) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1749 f = unknown_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1750 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1751 else if (strcmp(format, "IEEE, little-endian") == 0) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1752 f = ieee_little_endian_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1753 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1754 else if (strcmp(format, "IEEE, big-endian") == 0) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1755 f = ieee_big_endian_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1756 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1757 else {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1758 PyErr_SetString(PyExc_ValueError,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1759 "__setformat__() argument 2 must be "
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1760 "'unknown', 'IEEE, little-endian' or "
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1761 "'IEEE, big-endian'");
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1762 return NULL;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1763
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1764 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1765
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1766 if (f != unknown_format && f != detected) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1767 PyErr_Format(PyExc_ValueError,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1768 "can only set %s format to 'unknown' or the "
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1769 "detected platform value", typestr);
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1770 return NULL;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1771 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1772
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1773 *p = f;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1774 Py_RETURN_NONE;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1775 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1776
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1777 PyDoc_STRVAR(float_setformat_doc,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1778 "float.__setformat__(typestr, fmt) -> None\n"
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1779 "\n"
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1780 "You probably don't want to use this function. It exists mainly to be\n"
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1781 "used in Python's test suite.\n"
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1782 "\n"
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1783 "typestr must be 'double' or 'float'. fmt must be one of 'unknown',\n"
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1784 "'IEEE, big-endian' or 'IEEE, little-endian', and in addition can only be\n"
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1785 "one of the latter two if it appears to match the underlying C reality.\n"
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1786 "\n"
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1787 "Overrides the automatic determination of C-level floating point type.\n"
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1788 "This affects how floats are converted to and from binary strings.");
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1789
44432 4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1790 static PyObject *
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1791 float_getzero(PyObject v, void closure)
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1792 {
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1793 return PyFloat_FromDouble(0.0);
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1794 }
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1795
45381 b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1796 static PyObject *
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1797 float__format__(PyObject self, PyObject args)
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1798 {
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1799 PyObject *format_spec;
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1800
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1801 if (!PyArg_ParseTuple(args, "O:__format__", &format_spec))
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1802 return NULL;
47294 4fe192d48960 Renamed PyString to PyBytes Christian Heimes <christian@cheimes.de> parents: 46792 diff changeset	1803 if (PyBytes_Check(format_spec))
47392 47ef9a806ce9 Refactor and clean up str.format() code (and helpers) in advance of optimizations. Eric Smith <eric@trueblade.com> parents: 47294 diff changeset	1804 return _PyFloat_FormatAdvanced(self,
47ef9a806ce9 Refactor and clean up str.format() code (and helpers) in advance of optimizations. Eric Smith <eric@trueblade.com> parents: 47294 diff changeset	1805 PyBytes_AS_STRING(format_spec),
47ef9a806ce9 Refactor and clean up str.format() code (and helpers) in advance of optimizations. Eric Smith <eric@trueblade.com> parents: 47294 diff changeset	1806 PyBytes_GET_SIZE(format_spec));
45381 b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1807 if (PyUnicode_Check(format_spec)) {
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1808 /* Convert format_spec to a str */
47392 47ef9a806ce9 Refactor and clean up str.format() code (and helpers) in advance of optimizations. Eric Smith <eric@trueblade.com> parents: 47294 diff changeset	1809 PyObject *result;
47ef9a806ce9 Refactor and clean up str.format() code (and helpers) in advance of optimizations. Eric Smith <eric@trueblade.com> parents: 47294 diff changeset	1810 PyObject *str_spec = PyObject_Str(format_spec);
45381 b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1811
47392 47ef9a806ce9 Refactor and clean up str.format() code (and helpers) in advance of optimizations. Eric Smith <eric@trueblade.com> parents: 47294 diff changeset	1812 if (str_spec == NULL)
47ef9a806ce9 Refactor and clean up str.format() code (and helpers) in advance of optimizations. Eric Smith <eric@trueblade.com> parents: 47294 diff changeset	1813 return NULL;
45381 b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1814
47392 47ef9a806ce9 Refactor and clean up str.format() code (and helpers) in advance of optimizations. Eric Smith <eric@trueblade.com> parents: 47294 diff changeset	1815 result = _PyFloat_FormatAdvanced(self,
47ef9a806ce9 Refactor and clean up str.format() code (and helpers) in advance of optimizations. Eric Smith <eric@trueblade.com> parents: 47294 diff changeset	1816 PyBytes_AS_STRING(str_spec),
47ef9a806ce9 Refactor and clean up str.format() code (and helpers) in advance of optimizations. Eric Smith <eric@trueblade.com> parents: 47294 diff changeset	1817 PyBytes_GET_SIZE(str_spec));
45381 b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1818
47392 47ef9a806ce9 Refactor and clean up str.format() code (and helpers) in advance of optimizations. Eric Smith <eric@trueblade.com> parents: 47294 diff changeset	1819 Py_DECREF(str_spec);
45381 b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1820 return result;
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1821 }
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1822 PyErr_SetString(PyExc_TypeError, "__format__ requires str or unicode");
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1823 return NULL;
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1824 }
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1825
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1826 PyDoc_STRVAR(float__format__doc,
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1827 "float.__format__(format_spec) -> string\n"
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1828 "\n"
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1829 "Formats the float according to format_spec.");
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1830
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1831
27521 17bfd5dbc0f1 Implement appropriate __getnewargs__ for all immutable subclassable builtin Guido van Rossum <guido@python.org> parents: 27484 diff changeset	1832 static PyMethodDef float_methods[] = {
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1833 {"conjugate", (PyCFunction)float_float, METH_NOARGS,
44432 4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1834 "Returns self, the complex conjugate of any float."},
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1835 {"__trunc__", (PyCFunction)float_trunc, METH_NOARGS,
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1836 "Returns the Integral closest to x between 0 and x."},
45024 f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1837 {"as_integer_ratio", (PyCFunction)float_as_integer_ratio, METH_NOARGS,
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1838 float_as_integer_ratio_doc},
47966 97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1839 {"fromhex", (PyCFunction)float_fromhex,
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1840 METH_O\|METH_CLASS, float_fromhex_doc},
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1841 {"hex", (PyCFunction)float_hex,
97ba936e8df8 Issue #3008: add instance method float.hex and class method float.fromhex Mark Dickinson <dickinsm@gmail.com> parents: 47897 diff changeset	1842 METH_NOARGS, float_hex_doc},
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1843 {"is_integer", (PyCFunction)float_is_integer, METH_NOARGS,
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1844 "Returns True if the float is an integer."},
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1845 #if 0
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1846 {"is_inf", (PyCFunction)float_is_inf, METH_NOARGS,
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1847 "Returns True if the float is positive or negative infinite."},
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1848 {"is_finite", (PyCFunction)float_is_finite, METH_NOARGS,
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1849 "Returns True if the float is finite, neither infinite nor NaN."},
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1850 {"is_nan", (PyCFunction)float_is_nan, METH_NOARGS,
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1851 "Returns True if the float is not a number (NaN)."},
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 46154 diff changeset	1852 #endif
27521 17bfd5dbc0f1 Implement appropriate __getnewargs__ for all immutable subclassable builtin Guido van Rossum <guido@python.org> parents: 27484 diff changeset	1853 {"__getnewargs__", (PyCFunction)float_getnewargs, METH_NOARGS},
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1854 {"__getformat__", (PyCFunction)float_getformat,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1855 METH_O\|METH_CLASS, float_getformat_doc},
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1856 {"__setformat__", (PyCFunction)float_setformat,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1857 METH_VARARGS\|METH_CLASS, float_setformat_doc},
45381 b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1858 {"__format__", (PyCFunction)float__format__,
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1859 METH_VARARGS, float__format__doc},
27521 17bfd5dbc0f1 Implement appropriate __getnewargs__ for all immutable subclassable builtin Guido van Rossum <guido@python.org> parents: 27484 diff changeset	1860 {NULL, NULL} /* sentinel */
17bfd5dbc0f1 Implement appropriate __getnewargs__ for all immutable subclassable builtin Guido van Rossum <guido@python.org> parents: 27484 diff changeset	1861 };
17bfd5dbc0f1 Implement appropriate __getnewargs__ for all immutable subclassable builtin Guido van Rossum <guido@python.org> parents: 27484 diff changeset	1862
44432 4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1863 static PyGetSetDef float_getset[] = {
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1864 {"real",
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1865 (getter)float_float, (setter)NULL,
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1866 "the real part of a complex number",
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1867 NULL},
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1868 {"imag",
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1869 (getter)float_getzero, (setter)NULL,
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1870 "the imaginary part of a complex number",
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1871 NULL},
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1872 {NULL} /* Sentinel */
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1873 };
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1874
23832 ed1ba37a46b7 Patch #568124: Add doc string macros. Martin v. Löwis <martin@v.loewis.de> parents: 23344 diff changeset	1875 PyDoc_STRVAR(float_doc,
18933 09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1876 "float(x) -> floating point number\n\
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1877 \n\
23832 ed1ba37a46b7 Patch #568124: Add doc string macros. Martin v. Löwis <martin@v.loewis.de> parents: 23344 diff changeset	1878 Convert a string or number to a floating point number, if possible.");
18933 09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1879
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1880
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	1881 static PyNumberMethods float_as_number = {
37304 79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36759 diff changeset	1882 float_add, /nb_add/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36759 diff changeset	1883 float_sub, /nb_subtract/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36759 diff changeset	1884 float_mul, /nb_multiply/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36759 diff changeset	1885 float_classic_div, /nb_divide/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36759 diff changeset	1886 float_rem, /nb_remainder/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36759 diff changeset	1887 float_divmod, /nb_divmod/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36759 diff changeset	1888 float_pow, /nb_power/
1746 1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1347 diff changeset	1889 (unaryfunc)float_neg, /nb_negative/
44432 4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1890 (unaryfunc)float_float, /nb_positive/
1746 1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1347 diff changeset	1891 (unaryfunc)float_abs, /nb_absolute/
1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1347 diff changeset	1892 (inquiry)float_nonzero, /nb_nonzero/
405 d3d328680328 Added NULL function pointers for shift and mask ops. Guido van Rossum <guido@python.org> parents: 391 diff changeset	1893 0, /nb_invert/
d3d328680328 Added NULL function pointers for shift and mask ops. Guido van Rossum <guido@python.org> parents: 391 diff changeset	1894 0, /nb_lshift/
d3d328680328 Added NULL function pointers for shift and mask ops. Guido van Rossum <guido@python.org> parents: 391 diff changeset	1895 0, /nb_rshift/
d3d328680328 Added NULL function pointers for shift and mask ops. Guido van Rossum <guido@python.org> parents: 391 diff changeset	1896 0, /nb_and/
d3d328680328 Added NULL function pointers for shift and mask ops. Guido van Rossum <guido@python.org> parents: 391 diff changeset	1897 0, /nb_xor/
d3d328680328 Added NULL function pointers for shift and mask ops. Guido van Rossum <guido@python.org> parents: 391 diff changeset	1898 0, /nb_or/
37304 79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36759 diff changeset	1899 float_coerce, /nb_coerce/
44432 4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1900 float_trunc, /nb_int/
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1901 float_trunc, /nb_long/
37304 79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36759 diff changeset	1902 float_float, /nb_float/
47822 3ada46f2321d Revert 64424, 64438, and 64439. Raymond Hettinger <python@rcn.com> parents: 47791 diff changeset	1903 0, /* nb_oct */
3ada46f2321d Revert 64424, 64438, and 64439. Raymond Hettinger <python@rcn.com> parents: 47791 diff changeset	1904 0, /* nb_hex */
19051 f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1905 0, /* nb_inplace_add */
f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1906 0, /* nb_inplace_subtract */
f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1907 0, /* nb_inplace_multiply */
f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1908 0, /* nb_inplace_divide */
f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1909 0, /* nb_inplace_remainder */
f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1910 0, /* nb_inplace_power */
f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1911 0, /* nb_inplace_lshift */
f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1912 0, /* nb_inplace_rshift */
f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1913 0, /* nb_inplace_and */
f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1914 0, /* nb_inplace_xor */
f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1915 0, /* nb_inplace_or */
21353 257c938900a6 float_int_div(): For clarity, move this closer to the other float Tim Peters <tim.peters@gmail.com> parents: 21097 diff changeset	1916 float_floor_div, /* nb_floor_divide */
19051 f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1917 float_div, /* nb_true_divide */
f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1918 0, /* nb_inplace_floor_divide */
f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1919 0, /* nb_inplace_true_divide */
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	1920 };
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	1921
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	1922 PyTypeObject PyFloat_Type = {
42333 6620a510e9a9 PEP 3123: Provide forward compatibility with Python 3.0, while keeping Martin v. Löwis <martin@v.loewis.de> parents: 41580 diff changeset	1923 PyVarObject_HEAD_INIT(&PyType_Type, 0)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	1924 "float",
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	1925 sizeof(PyFloatObject),
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	1926 0,
18933 09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1927 (destructor)float_dealloc, /* tp_dealloc */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1928 (printfunc)float_print, /* tp_print */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1929 0, /* tp_getattr */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1930 0, /* tp_setattr */
32150 65f9ad9bc829 Remove float_compare as per Michael W. Hudson <mwh@python.net> parents: 31590 diff changeset	1931 0, /* tp_compare */
18933 09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1932 (reprfunc)float_repr, /* tp_repr */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1933 &float_as_number, /* tp_as_number */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1934 0, /* tp_as_sequence */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1935 0, /* tp_as_mapping */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1936 (hashfunc)float_hash, /* tp_hash */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1937 0, /* tp_call */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1938 (reprfunc)float_str, /* tp_str */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1939 PyObject_GenericGetAttr, /* tp_getattro */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1940 0, /* tp_setattro */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1941 0, /* tp_as_buffer */
19552 6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1942 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_CHECKTYPES \|
6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1943 Py_TPFLAGS_BASETYPE, /* tp_flags */
18933 09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1944 float_doc, /* tp_doc */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1945 0, /* tp_traverse */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1946 0, /* tp_clear */
37304 79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36759 diff changeset	1947 float_richcompare, /* tp_richcompare */
18933 09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1948 0, /* tp_weaklistoffset */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1949 0, /* tp_iter */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1950 0, /* tp_iternext */
27521 17bfd5dbc0f1 Implement appropriate __getnewargs__ for all immutable subclassable builtin Guido van Rossum <guido@python.org> parents: 27484 diff changeset	1951 float_methods, /* tp_methods */
18933 09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1952 0, /* tp_members */
44432 4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1953 float_getset, /* tp_getset */
18933 09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1954 0, /* tp_base */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1955 0, /* tp_dict */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1956 0, /* tp_descr_get */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1957 0, /* tp_descr_set */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1958 0, /* tp_dictoffset */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1959 0, /* tp_init */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1960 0, /* tp_alloc */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1961 float_new, /* tp_new */
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	1962 };
5936 80d24364b932 Added _Fini() routines to free up some memory Guido van Rossum <guido@python.org> parents: 5504 diff changeset	1963
80d24364b932 Added _Fini() routines to free up some memory Guido van Rossum <guido@python.org> parents: 5504 diff changeset	1964 void
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1965 _PyFloat_Init(void)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1966 {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1967 /* We attempt to determine if this machine is using IEEE
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1968 floating point formats by peering at the bits of some
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1969 carefully chosen values. If it looks like we are on an
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1970 IEEE platform, the float packing/unpacking routines can
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1971 just copy bits, if not they resort to arithmetic & shifts
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1972 and masks. The shifts & masks approach works on all finite
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1973 values, but what happens to infinities, NaNs and signed
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1974 zeroes on packing is an accident, and attempting to unpack
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1975 a NaN or an infinity will raise an exception.
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1976
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1977 Note that if we're on some whacked-out platform which uses
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1978 IEEE formats but isn't strictly little-endian or big-
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1979 endian, we will fall back to the portable shifts & masks
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1980 method. */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1981
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1982 #if SIZEOF_DOUBLE == 8
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1983 {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1984 double x = 9006104071832581.0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1985 if (memcmp(&x, "\x43\x3f\xff\x01\x02\x03\x04\x05", 8) == 0)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1986 detected_double_format = ieee_big_endian_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1987 else if (memcmp(&x, "\x05\x04\x03\x02\x01\xff\x3f\x43", 8) == 0)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1988 detected_double_format = ieee_little_endian_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1989 else
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1990 detected_double_format = unknown_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1991 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1992 #else
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1993 detected_double_format = unknown_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1994 #endif
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1995
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1996 #if SIZEOF_FLOAT == 4
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1997 {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1998 float y = 16711938.0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1999 if (memcmp(&y, "\x4b\x7f\x01\x02", 4) == 0)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2000 detected_float_format = ieee_big_endian_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2001 else if (memcmp(&y, "\x02\x01\x7f\x4b", 4) == 0)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2002 detected_float_format = ieee_little_endian_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2003 else
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2004 detected_float_format = unknown_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2005 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2006 #else
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2007 detected_float_format = unknown_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2008 #endif
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2009
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2010 double_format = detected_double_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2011 float_format = detected_float_format;
44267 f909872917b9 The new float repr causes too much trouble and pain. I'm disabling the feature until we have sorted out the issues on all machines. 64bit machines seem to have issues and Guido has reported even worse. Christian Heimes <christian@cheimes.de> parents: 44262 diff changeset	2012
45060 c05ee77b39f2 The previous change was causing a segfault after multiple calls to Py_Initialize() and Py_Finalize(). Christian Heimes <christian@cheimes.de> parents: 45059 diff changeset	2013 /* Init float info */
c05ee77b39f2 The previous change was causing a segfault after multiple calls to Py_Initialize() and Py_Finalize(). Christian Heimes <christian@cheimes.de> parents: 45059 diff changeset	2014 if (FloatInfoType.tp_name == 0)
c05ee77b39f2 The previous change was causing a segfault after multiple calls to Py_Initialize() and Py_Finalize(). Christian Heimes <christian@cheimes.de> parents: 45059 diff changeset	2015 PyStructSequence_InitType(&FloatInfoType, &floatinfo_desc);
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2016 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2017
47897 0738119c1ef8 - Issue #2862: Make int and float freelist management consistent with other Gregory P. Smith <greg@mad-scientist.com> parents: 47889 diff changeset	2018 int
0738119c1ef8 - Issue #2862: Make int and float freelist management consistent with other Gregory P. Smith <greg@mad-scientist.com> parents: 47889 diff changeset	2019 PyFloat_ClearFreeList(void)
5936 80d24364b932 Added _Fini() routines to free up some memory Guido van Rossum <guido@python.org> parents: 5504 diff changeset	2020 {
10391 7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	2021 PyFloatObject *p;
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	2022 PyFloatBlock list, next;
47897 0738119c1ef8 - Issue #2862: Make int and float freelist management consistent with other Gregory P. Smith <greg@mad-scientist.com> parents: 47889 diff changeset	2023 int i;
0738119c1ef8 - Issue #2862: Make int and float freelist management consistent with other Gregory P. Smith <greg@mad-scientist.com> parents: 47889 diff changeset	2024 int u; /* remaining unfreed ints per block */
0738119c1ef8 - Issue #2862: Make int and float freelist management consistent with other Gregory P. Smith <greg@mad-scientist.com> parents: 47889 diff changeset	2025 int freelist_size = 0;
10382 e2a08a81e56f OK, try again. Vladimir gave me a fix for the alignment bus error, Guido van Rossum <guido@python.org> parents: 10375 diff changeset	2026
e2a08a81e56f OK, try again. Vladimir gave me a fix for the alignment bus error, Guido van Rossum <guido@python.org> parents: 10375 diff changeset	2027 list = block_list;
e2a08a81e56f OK, try again. Vladimir gave me a fix for the alignment bus error, Guido van Rossum <guido@python.org> parents: 10375 diff changeset	2028 block_list = NULL;
10432 1cc5d20d2ed8 Fix a problem with Vladimir's PyFloat_Fini code: clear the free list; if Guido van Rossum <guido@python.org> parents: 10391 diff changeset	2029 free_list = NULL;
10382 e2a08a81e56f OK, try again. Vladimir gave me a fix for the alignment bus error, Guido van Rossum <guido@python.org> parents: 10375 diff changeset	2030 while (list != NULL) {
47897 0738119c1ef8 - Issue #2862: Make int and float freelist management consistent with other Gregory P. Smith <greg@mad-scientist.com> parents: 47889 diff changeset	2031 u = 0;
10432 1cc5d20d2ed8 Fix a problem with Vladimir's PyFloat_Fini code: clear the free list; if Guido van Rossum <guido@python.org> parents: 10391 diff changeset	2032 for (i = 0, p = &list->objects[0];
1cc5d20d2ed8 Fix a problem with Vladimir's PyFloat_Fini code: clear the free list; if Guido van Rossum <guido@python.org> parents: 10391 diff changeset	2033 i < N_FLOATOBJECTS;
1cc5d20d2ed8 Fix a problem with Vladimir's PyFloat_Fini code: clear the free list; if Guido van Rossum <guido@python.org> parents: 10391 diff changeset	2034 i++, p++) {
44350 26384b8180c7 #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, Py_TYPE and Py_REFCNT. Macros for b/w compatibility are available. Christian Heimes <christian@cheimes.de> parents: 44344 diff changeset	2035 if (PyFloat_CheckExact(p) && Py_REFCNT(p) != 0)
47897 0738119c1ef8 - Issue #2862: Make int and float freelist management consistent with other Gregory P. Smith <greg@mad-scientist.com> parents: 47889 diff changeset	2036 u++;
10382 e2a08a81e56f OK, try again. Vladimir gave me a fix for the alignment bus error, Guido van Rossum <guido@python.org> parents: 10375 diff changeset	2037 }
10391 7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	2038 next = list->next;
47897 0738119c1ef8 - Issue #2862: Make int and float freelist management consistent with other Gregory P. Smith <greg@mad-scientist.com> parents: 47889 diff changeset	2039 if (u) {
10391 7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	2040 list->next = block_list;
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	2041 block_list = list;
10432 1cc5d20d2ed8 Fix a problem with Vladimir's PyFloat_Fini code: clear the free list; if Guido van Rossum <guido@python.org> parents: 10391 diff changeset	2042 for (i = 0, p = &list->objects[0];
1cc5d20d2ed8 Fix a problem with Vladimir's PyFloat_Fini code: clear the free list; if Guido van Rossum <guido@python.org> parents: 10391 diff changeset	2043 i < N_FLOATOBJECTS;
1cc5d20d2ed8 Fix a problem with Vladimir's PyFloat_Fini code: clear the free list; if Guido van Rossum <guido@python.org> parents: 10391 diff changeset	2044 i++, p++) {
19865 f2a3009b528e Replace a few places where X->ob_type was compared to &PyXXX_Type with Guido van Rossum <guido@python.org> parents: 19753 diff changeset	2045 if (!PyFloat_CheckExact(p) \|\|
44350 26384b8180c7 #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, Py_TYPE and Py_REFCNT. Macros for b/w compatibility are available. Christian Heimes <christian@cheimes.de> parents: 44344 diff changeset	2046 Py_REFCNT(p) == 0) {
26384b8180c7 #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, Py_TYPE and Py_REFCNT. Macros for b/w compatibility are available. Christian Heimes <christian@cheimes.de> parents: 44344 diff changeset	2047 Py_TYPE(p) = (struct _typeobject *)
10432 1cc5d20d2ed8 Fix a problem with Vladimir's PyFloat_Fini code: clear the free list; if Guido van Rossum <guido@python.org> parents: 10391 diff changeset	2048 free_list;
1cc5d20d2ed8 Fix a problem with Vladimir's PyFloat_Fini code: clear the free list; if Guido van Rossum <guido@python.org> parents: 10391 diff changeset	2049 free_list = p;
1cc5d20d2ed8 Fix a problem with Vladimir's PyFloat_Fini code: clear the free list; if Guido van Rossum <guido@python.org> parents: 10391 diff changeset	2050 }
1cc5d20d2ed8 Fix a problem with Vladimir's PyFloat_Fini code: clear the free list; if Guido van Rossum <guido@python.org> parents: 10391 diff changeset	2051 }
10382 e2a08a81e56f OK, try again. Vladimir gave me a fix for the alignment bus error, Guido van Rossum <guido@python.org> parents: 10375 diff changeset	2052 }
e2a08a81e56f OK, try again. Vladimir gave me a fix for the alignment bus error, Guido van Rossum <guido@python.org> parents: 10375 diff changeset	2053 else {
47897 0738119c1ef8 - Issue #2862: Make int and float freelist management consistent with other Gregory P. Smith <greg@mad-scientist.com> parents: 47889 diff changeset	2054 PyMem_FREE(list);
10382 e2a08a81e56f OK, try again. Vladimir gave me a fix for the alignment bus error, Guido van Rossum <guido@python.org> parents: 10375 diff changeset	2055 }
47897 0738119c1ef8 - Issue #2862: Make int and float freelist management consistent with other Gregory P. Smith <greg@mad-scientist.com> parents: 47889 diff changeset	2056 freelist_size += u;
10391 7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	2057 list = next;
10382 e2a08a81e56f OK, try again. Vladimir gave me a fix for the alignment bus error, Guido van Rossum <guido@python.org> parents: 10375 diff changeset	2058 }
47897 0738119c1ef8 - Issue #2862: Make int and float freelist management consistent with other Gregory P. Smith <greg@mad-scientist.com> parents: 47889 diff changeset	2059 return freelist_size;
45143 8fdd6d62ea55 Patch #1953 Christian Heimes <christian@cheimes.de> parents: 45101 diff changeset	2060 }
8fdd6d62ea55 Patch #1953 Christian Heimes <christian@cheimes.de> parents: 45101 diff changeset	2061
8fdd6d62ea55 Patch #1953 Christian Heimes <christian@cheimes.de> parents: 45101 diff changeset	2062 void
8fdd6d62ea55 Patch #1953 Christian Heimes <christian@cheimes.de> parents: 45101 diff changeset	2063 PyFloat_Fini(void)
8fdd6d62ea55 Patch #1953 Christian Heimes <christian@cheimes.de> parents: 45101 diff changeset	2064 {
8fdd6d62ea55 Patch #1953 Christian Heimes <christian@cheimes.de> parents: 45101 diff changeset	2065 PyFloatObject *p;
8fdd6d62ea55 Patch #1953 Christian Heimes <christian@cheimes.de> parents: 45101 diff changeset	2066 PyFloatBlock *list;
47897 0738119c1ef8 - Issue #2862: Make int and float freelist management consistent with other Gregory P. Smith <greg@mad-scientist.com> parents: 47889 diff changeset	2067 int i;
0738119c1ef8 - Issue #2862: Make int and float freelist management consistent with other Gregory P. Smith <greg@mad-scientist.com> parents: 47889 diff changeset	2068 int u; /* total unfreed floats per block */
45143 8fdd6d62ea55 Patch #1953 Christian Heimes <christian@cheimes.de> parents: 45101 diff changeset	2069
47897 0738119c1ef8 - Issue #2862: Make int and float freelist management consistent with other Gregory P. Smith <greg@mad-scientist.com> parents: 47889 diff changeset	2070 u = PyFloat_ClearFreeList();
45143 8fdd6d62ea55 Patch #1953 Christian Heimes <christian@cheimes.de> parents: 45101 diff changeset	2071
10391 7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	2072 if (!Py_VerboseFlag)
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	2073 return;
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	2074 fprintf(stderr, "# cleanup floats");
47897 0738119c1ef8 - Issue #2862: Make int and float freelist management consistent with other Gregory P. Smith <greg@mad-scientist.com> parents: 47889 diff changeset	2075 if (!u) {
10391 7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	2076 fprintf(stderr, "\n");
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	2077 }
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	2078 else {
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	2079 fprintf(stderr,
47897 0738119c1ef8 - Issue #2862: Make int and float freelist management consistent with other Gregory P. Smith <greg@mad-scientist.com> parents: 47889 diff changeset	2080 ": %d unfreed float%s\n",
0738119c1ef8 - Issue #2862: Make int and float freelist management consistent with other Gregory P. Smith <greg@mad-scientist.com> parents: 47889 diff changeset	2081 u, u == 1 ? "" : "s");
10391 7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	2082 }
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	2083 if (Py_VerboseFlag > 1) {
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	2084 list = block_list;
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	2085 while (list != NULL) {
10432 1cc5d20d2ed8 Fix a problem with Vladimir's PyFloat_Fini code: clear the free list; if Guido van Rossum <guido@python.org> parents: 10391 diff changeset	2086 for (i = 0, p = &list->objects[0];
1cc5d20d2ed8 Fix a problem with Vladimir's PyFloat_Fini code: clear the free list; if Guido van Rossum <guido@python.org> parents: 10391 diff changeset	2087 i < N_FLOATOBJECTS;
1cc5d20d2ed8 Fix a problem with Vladimir's PyFloat_Fini code: clear the free list; if Guido van Rossum <guido@python.org> parents: 10391 diff changeset	2088 i++, p++) {
19865 f2a3009b528e Replace a few places where X->ob_type was compared to &PyXXX_Type with Guido van Rossum <guido@python.org> parents: 19753 diff changeset	2089 if (PyFloat_CheckExact(p) &&
44350 26384b8180c7 #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, Py_TYPE and Py_REFCNT. Macros for b/w compatibility are available. Christian Heimes <christian@cheimes.de> parents: 44344 diff changeset	2090 Py_REFCNT(p) != 0) {
10391 7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	2091 char buf[100];
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	2092 PyFloat_AsString(buf, p);
36759 83b860acfe95 Use %ld and casts to long for refcount printing, in absense of a universally Thomas Wouters <thomas@python.org> parents: 36675 diff changeset	2093 /* XXX(twouters) cast refcount to
83b860acfe95 Use %ld and casts to long for refcount printing, in absense of a universally Thomas Wouters <thomas@python.org> parents: 36675 diff changeset	2094 long until %zd is universally
83b860acfe95 Use %ld and casts to long for refcount printing, in absense of a universally Thomas Wouters <thomas@python.org> parents: 36675 diff changeset	2095 available
83b860acfe95 Use %ld and casts to long for refcount printing, in absense of a universally Thomas Wouters <thomas@python.org> parents: 36675 diff changeset	2096 */
10391 7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	2097 fprintf(stderr,
36759 83b860acfe95 Use %ld and casts to long for refcount printing, in absense of a universally Thomas Wouters <thomas@python.org> parents: 36675 diff changeset	2098 "# <float at %p, refcnt=%ld, val=%s>\n",
44350 26384b8180c7 #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, Py_TYPE and Py_REFCNT. Macros for b/w compatibility are available. Christian Heimes <christian@cheimes.de> parents: 44344 diff changeset	2099 p, (long)Py_REFCNT(p), buf);
10391 7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	2100 }
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	2101 }
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	2102 list = list->next;
10382 e2a08a81e56f OK, try again. Vladimir gave me a fix for the alignment bus error, Guido van Rossum <guido@python.org> parents: 10375 diff changeset	2103 }
e2a08a81e56f OK, try again. Vladimir gave me a fix for the alignment bus error, Guido van Rossum <guido@python.org> parents: 10375 diff changeset	2104 }
5936 80d24364b932 Added _Fini() routines to free up some memory Guido van Rossum <guido@python.org> parents: 5504 diff changeset	2105 }
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2106
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2107 /*----------------------------------------------------------------------------
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2108 * _PyFloat_{Pack,Unpack}{4,8}. See floatobject.h.
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2109 */
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2110 int
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2111 _PyFloat_Pack4(double x, unsigned char *p, int le)
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2112 {
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2113 if (float_format == unknown_format) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2114 unsigned char sign;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2115 int e;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2116 double f;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2117 unsigned int fbits;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2118 int incr = 1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2119
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2120 if (le) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2121 p += 3;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2122 incr = -1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2123 }
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2124
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2125 if (x < 0) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2126 sign = 1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2127 x = -x;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2128 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2129 else
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2130 sign = 0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2131
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2132 f = frexp(x, &e);
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2133
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2134 /* Normalize f to be in the range [1.0, 2.0) */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2135 if (0.5 <= f && f < 1.0) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2136 f *= 2.0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2137 e--;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2138 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2139 else if (f == 0.0)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2140 e = 0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2141 else {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2142 PyErr_SetString(PyExc_SystemError,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2143 "frexp() result out of range");
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2144 return -1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2145 }
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2146
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2147 if (e >= 128)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2148 goto Overflow;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2149 else if (e < -126) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2150 /* Gradual underflow */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2151 f = ldexp(f, 126 + e);
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2152 e = 0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2153 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2154 else if (!(e == 0 && f == 0.0)) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2155 e += 127;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2156 f -= 1.0; /* Get rid of leading 1 */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2157 }
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2158
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2159 f = 8388608.0; / 2*23 /
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2160 fbits = (unsigned int)(f + 0.5); /* Round */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2161 assert(fbits <= 8388608);
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2162 if (fbits >> 23) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2163 /* The carry propagated out of a string of 23 1 bits. */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2164 fbits = 0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2165 ++e;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2166 if (e >= 255)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2167 goto Overflow;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2168 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2169
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2170 /* First byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2171 *p = (sign << 7) \| (e >> 1);
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2172 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2173
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2174 /* Second byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2175 *p = (char) (((e & 1) << 7) \| (fbits >> 16));
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2176 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2177
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2178 /* Third byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2179 *p = (fbits >> 8) & 0xFF;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2180 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2181
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2182 /* Fourth byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2183 *p = fbits & 0xFF;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2184
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2185 /* Done */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2186 return 0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2187
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2188 }
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2189 else {
35178 cf7a849ce61f Apparently some compiler gives a warning on Michael W. Hudson <mwh@python.net> parents: 34972 diff changeset	2190 float y = (float)x;
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2191 const char s = (char)&y;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2192 int i, incr = 1;
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2193
45759 354e377c9590 Issue 705836: Fix struct.pack(">f", 1e40) to behave consistently Mark Dickinson <dickinsm@gmail.com> parents: 45381 diff changeset	2194 if (Py_IS_INFINITY(y) && !Py_IS_INFINITY(x))
354e377c9590 Issue 705836: Fix struct.pack(">f", 1e40) to behave consistently Mark Dickinson <dickinsm@gmail.com> parents: 45381 diff changeset	2195 goto Overflow;
354e377c9590 Issue 705836: Fix struct.pack(">f", 1e40) to behave consistently Mark Dickinson <dickinsm@gmail.com> parents: 45381 diff changeset	2196
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2197 if ((float_format == ieee_little_endian_format && !le)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2198 \|\| (float_format == ieee_big_endian_format && le)) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2199 p += 3;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2200 incr = -1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2201 }
45759 354e377c9590 Issue 705836: Fix struct.pack(">f", 1e40) to behave consistently Mark Dickinson <dickinsm@gmail.com> parents: 45381 diff changeset	2202
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2203 for (i = 0; i < 4; i++) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2204 p = s++;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2205 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2206 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2207 return 0;
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2208 }
45759 354e377c9590 Issue 705836: Fix struct.pack(">f", 1e40) to behave consistently Mark Dickinson <dickinsm@gmail.com> parents: 45381 diff changeset	2209 Overflow:
354e377c9590 Issue 705836: Fix struct.pack(">f", 1e40) to behave consistently Mark Dickinson <dickinsm@gmail.com> parents: 45381 diff changeset	2210 PyErr_SetString(PyExc_OverflowError,
354e377c9590 Issue 705836: Fix struct.pack(">f", 1e40) to behave consistently Mark Dickinson <dickinsm@gmail.com> parents: 45381 diff changeset	2211 "float too large to pack with f format");
354e377c9590 Issue 705836: Fix struct.pack(">f", 1e40) to behave consistently Mark Dickinson <dickinsm@gmail.com> parents: 45381 diff changeset	2212 return -1;
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2213 }
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2214
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2215 int
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2216 _PyFloat_Pack8(double x, unsigned char *p, int le)
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2217 {
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2218 if (double_format == unknown_format) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2219 unsigned char sign;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2220 int e;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2221 double f;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2222 unsigned int fhi, flo;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2223 int incr = 1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2224
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2225 if (le) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2226 p += 7;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2227 incr = -1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2228 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2229
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2230 if (x < 0) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2231 sign = 1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2232 x = -x;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2233 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2234 else
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2235 sign = 0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2236
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2237 f = frexp(x, &e);
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2238
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2239 /* Normalize f to be in the range [1.0, 2.0) */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2240 if (0.5 <= f && f < 1.0) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2241 f *= 2.0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2242 e--;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2243 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2244 else if (f == 0.0)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2245 e = 0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2246 else {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2247 PyErr_SetString(PyExc_SystemError,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2248 "frexp() result out of range");
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2249 return -1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2250 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2251
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2252 if (e >= 1024)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2253 goto Overflow;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2254 else if (e < -1022) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2255 /* Gradual underflow */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2256 f = ldexp(f, 1022 + e);
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2257 e = 0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2258 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2259 else if (!(e == 0 && f == 0.0)) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2260 e += 1023;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2261 f -= 1.0; /* Get rid of leading 1 */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2262 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2263
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2264 /* fhi receives the high 28 bits; flo the low 24 bits (== 52 bits) */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2265 f = 268435456.0; / 2*28 /
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2266 fhi = (unsigned int)f; /* Truncate */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2267 assert(fhi < 268435456);
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2268
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2269 f -= (double)fhi;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2270 f = 16777216.0; / 2*24 /
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2271 flo = (unsigned int)(f + 0.5); /* Round */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2272 assert(flo <= 16777216);
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2273 if (flo >> 24) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2274 /* The carry propagated out of a string of 24 1 bits. */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2275 flo = 0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2276 ++fhi;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2277 if (fhi >> 28) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2278 /* And it also progagated out of the next 28 bits. */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2279 fhi = 0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2280 ++e;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2281 if (e >= 2047)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2282 goto Overflow;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2283 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2284 }
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2285
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2286 /* First byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2287 *p = (sign << 7) \| (e >> 4);
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2288 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2289
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2290 /* Second byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2291 *p = (unsigned char) (((e & 0xF) << 4) \| (fhi >> 24));
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2292 p += incr;
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2293
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2294 /* Third byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2295 *p = (fhi >> 16) & 0xFF;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2296 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2297
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2298 /* Fourth byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2299 *p = (fhi >> 8) & 0xFF;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2300 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2301
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2302 /* Fifth byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2303 *p = fhi & 0xFF;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2304 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2305
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2306 /* Sixth byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2307 *p = (flo >> 16) & 0xFF;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2308 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2309
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2310 /* Seventh byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2311 *p = (flo >> 8) & 0xFF;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2312 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2313
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2314 /* Eighth byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2315 *p = flo & 0xFF;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2316 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2317
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2318 /* Done */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2319 return 0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2320
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2321 Overflow:
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2322 PyErr_SetString(PyExc_OverflowError,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2323 "float too large to pack with d format");
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2324 return -1;
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2325 }
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2326 else {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2327 const char s = (char)&x;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2328 int i, incr = 1;
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2329
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2330 if ((double_format == ieee_little_endian_format && !le)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2331 \|\| (double_format == ieee_big_endian_format && le)) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2332 p += 7;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2333 incr = -1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2334 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2335
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2336 for (i = 0; i < 8; i++) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2337 p = s++;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2338 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2339 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2340 return 0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2341 }
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2342 }
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2343
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2344 double
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2345 _PyFloat_Unpack4(const unsigned char *p, int le)
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2346 {
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2347 if (float_format == unknown_format) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2348 unsigned char sign;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2349 int e;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2350 unsigned int f;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2351 double x;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2352 int incr = 1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2353
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2354 if (le) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2355 p += 3;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2356 incr = -1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2357 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2358
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2359 /* First byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2360 sign = (*p >> 7) & 1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2361 e = (*p & 0x7F) << 1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2362 p += incr;
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2363
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2364 /* Second byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2365 e \|= (*p >> 7) & 1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2366 f = (*p & 0x7F) << 16;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2367 p += incr;
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2368
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2369 if (e == 255) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2370 PyErr_SetString(
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2371 PyExc_ValueError,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2372 "can't unpack IEEE 754 special value "
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2373 "on non-IEEE platform");
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2374 return -1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2375 }
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2376
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2377 /* Third byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2378 f \|= *p << 8;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2379 p += incr;
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2380
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2381 /* Fourth byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2382 f \|= *p;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2383
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2384 x = (double)f / 8388608.0;
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2385
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2386 /* XXX This sadly ignores Inf/NaN issues */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2387 if (e == 0)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2388 e = -126;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2389 else {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2390 x += 1.0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2391 e -= 127;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2392 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2393 x = ldexp(x, e);
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2394
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2395 if (sign)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2396 x = -x;
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2397
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2398 return x;
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2399 }
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2400 else {
35987 8eda1a58a490 Fix bug Michael W. Hudson <mwh@python.net> parents: 35178 diff changeset	2401 float x;
8eda1a58a490 Fix bug Michael W. Hudson <mwh@python.net> parents: 35178 diff changeset	2402
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2403 if ((float_format == ieee_little_endian_format && !le)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2404 \|\| (float_format == ieee_big_endian_format && le)) {
35987 8eda1a58a490 Fix bug Michael W. Hudson <mwh@python.net> parents: 35178 diff changeset	2405 char buf[4];
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2406 char *d = &buf[3];
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2407 int i;
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2408
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2409 for (i = 0; i < 4; i++) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2410 d-- = p++;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2411 }
35987 8eda1a58a490 Fix bug Michael W. Hudson <mwh@python.net> parents: 35178 diff changeset	2412 memcpy(&x, buf, 4);
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2413 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2414 else {
35987 8eda1a58a490 Fix bug Michael W. Hudson <mwh@python.net> parents: 35178 diff changeset	2415 memcpy(&x, p, 4);
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2416 }
35987 8eda1a58a490 Fix bug Michael W. Hudson <mwh@python.net> parents: 35178 diff changeset	2417
8eda1a58a490 Fix bug Michael W. Hudson <mwh@python.net> parents: 35178 diff changeset	2418 return x;
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2419 }
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2420 }
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2421
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2422 double
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2423 _PyFloat_Unpack8(const unsigned char *p, int le)
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2424 {
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2425 if (double_format == unknown_format) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2426 unsigned char sign;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2427 int e;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2428 unsigned int fhi, flo;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2429 double x;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2430 int incr = 1;
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2431
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2432 if (le) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2433 p += 7;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2434 incr = -1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2435 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2436
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2437 /* First byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2438 sign = (*p >> 7) & 1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2439 e = (*p & 0x7F) << 4;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2440
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2441 p += incr;
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2442
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2443 /* Second byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2444 e \|= (*p >> 4) & 0xF;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2445 fhi = (*p & 0xF) << 24;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2446 p += incr;
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2447
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2448 if (e == 2047) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2449 PyErr_SetString(
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2450 PyExc_ValueError,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2451 "can't unpack IEEE 754 special value "
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2452 "on non-IEEE platform");
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2453 return -1.0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2454 }
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2455
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2456 /* Third byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2457 fhi \|= *p << 16;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2458 p += incr;
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2459
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2460 /* Fourth byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2461 fhi \|= *p << 8;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2462 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2463
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2464 /* Fifth byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2465 fhi \|= *p;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2466 p += incr;
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2467
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2468 /* Sixth byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2469 flo = *p << 16;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2470 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2471
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2472 /* Seventh byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2473 flo \|= *p << 8;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2474 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2475
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2476 /* Eighth byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2477 flo \|= *p;
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2478
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2479 x = (double)fhi + (double)flo / 16777216.0; /* 2*24 /
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2480 x /= 268435456.0; /* 2*28 /
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2481
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2482 if (e == 0)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2483 e = -1022;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2484 else {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2485 x += 1.0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2486 e -= 1023;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2487 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2488 x = ldexp(x, e);
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2489
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2490 if (sign)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2491 x = -x;
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2492
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2493 return x;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2494 }
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2495 else {
35987 8eda1a58a490 Fix bug Michael W. Hudson <mwh@python.net> parents: 35178 diff changeset	2496 double x;
8eda1a58a490 Fix bug Michael W. Hudson <mwh@python.net> parents: 35178 diff changeset	2497
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2498 if ((double_format == ieee_little_endian_format && !le)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2499 \|\| (double_format == ieee_big_endian_format && le)) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2500 char buf[8];
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2501 char *d = &buf[7];
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2502 int i;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2503
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2504 for (i = 0; i < 8; i++) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2505 d-- = p++;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2506 }
35987 8eda1a58a490 Fix bug Michael W. Hudson <mwh@python.net> parents: 35178 diff changeset	2507 memcpy(&x, buf, 8);
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2508 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2509 else {
35987 8eda1a58a490 Fix bug Michael W. Hudson <mwh@python.net> parents: 35178 diff changeset	2510 memcpy(&x, p, 8);
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2511 }
35987 8eda1a58a490 Fix bug Michael W. Hudson <mwh@python.net> parents: 35178 diff changeset	2512
8eda1a58a490 Fix bug Michael W. Hudson <mwh@python.net> parents: 35178 diff changeset	2513 return x;
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2514 }
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2515 }

Mercurial > cpython-lru_cache-weakref

annotate Objects/floatobject.c @ 48178:cf331fef3293 legacy-trunk