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

annotate Objects/floatobject.c @ 47916:bed3dfd99281 legacy-trunk

Issue 3287: Raise correct exception for float inputs.

author	Raymond Hettinger <python@rcn.com>
date	Thu, 10 Jul 2008 09:31:08 +0000
parents	0738119c1ef8
children	97ba936e8df8

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
46154 1e10b30f7498 Fix compiler warning about finite() missing on Solaris. Neal Norwitz <nnorwitz@gmail.com> parents: 46135 diff changeset	13 #ifdef HAVE_IEEEFP_H
1e10b30f7498 Fix compiler warning about finite() missing on Solaris. Neal Norwitz <nnorwitz@gmail.com> parents: 46135 diff changeset	14 #include <ieeefp.h>
1e10b30f7498 Fix compiler warning about finite() missing on Solaris. Neal Norwitz <nnorwitz@gmail.com> parents: 46135 diff changeset	15 #endif
1e10b30f7498 Fix compiler warning about finite() missing on Solaris. Neal Norwitz <nnorwitz@gmail.com> parents: 46135 diff changeset	16
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	17 #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	18 /* 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	19 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	20 #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	21
5504 c88b9b868995 Faster floating point allocator, same idea as the int allocator. Guido van Rossum <guido@python.org> parents: 5396 diff changeset	22 /* 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	23 #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	24 #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	25 #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	26
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	27 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	28 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	29 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	30 };
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 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	33
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	34 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	35 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	36
5504 c88b9b868995 Faster floating point allocator, same idea as the int allocator. Guido van Rossum <guido@python.org> parents: 5396 diff changeset	37 static PyFloatObject *
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	38 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	39 {
c88b9b868995 Faster floating point allocator, same idea as the int allocator. Guido van Rossum <guido@python.org> parents: 5396 diff changeset	40 PyFloatObject p, q;
12576 1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring. Guido van Rossum <guido@python.org> parents: 12248 diff changeset	41 /* 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	42 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	43 if (p == NULL)
12576 1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring. Guido van Rossum <guido@python.org> parents: 12248 diff changeset	44 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	45 ((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	46 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	47 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	48 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	49 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	50 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	51 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	52 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	53 }
c88b9b868995 Faster floating point allocator, same idea as the int allocator. Guido van Rossum <guido@python.org> parents: 5396 diff changeset	54
44085 c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	55 double
c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	56 PyFloat_GetMax(void)
c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	57 {
c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	58 return DBL_MAX;
c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	59 }
c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	60
c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	61 double
c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	62 PyFloat_GetMin(void)
c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	63 {
c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	64 return DBL_MIN;
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
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	67 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	68
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	69 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	70 "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	71 \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	72 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	73 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	74 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	75
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 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	77 {"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	78 {"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	79 "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	80 {"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	81 "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	82 {"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	83 {"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	84 "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	85 {"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	86 "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	87 {"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	88 {"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	89 {"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	90 "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	91 {"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	92 {"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	93 {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	94 };
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
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 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	97 "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	98 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	99 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	100 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	101 };
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
44085 c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	103 PyObject *
c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	104 PyFloat_GetInfo(void)
c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	105 {
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	106 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	107 int pos = 0;
44085 c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	108
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	109 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	110 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	111 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	112 }
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 #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	115 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	116 #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	117 PyStructSequence_SET_ITEM(floatinfo, pos++, PyFloat_FromDouble(flag))
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 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	120 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	121 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	122 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	123 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	124 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	125 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	126 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	127 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	128 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	129 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	130 #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	131 #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	132
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 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	134 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	135 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	136 }
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 return floatinfo;
44085 c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	138 }
c218d1ac916e Feature #1534 Christian Heimes <christian@cheimes.de> parents: 43378 diff changeset	139
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	140 PyObject *
d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	141 PyFloat_FromDouble(double fval)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	142 {
5504 c88b9b868995 Faster floating point allocator, same idea as the int allocator. Guido van Rossum <guido@python.org> parents: 5396 diff changeset	143 register PyFloatObject *op;
c88b9b868995 Faster floating point allocator, same idea as the int allocator. Guido van Rossum <guido@python.org> parents: 5396 diff changeset	144 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	145 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	146 return NULL;
c88b9b868995 Faster floating point allocator, same idea as the int allocator. Guido van Rossum <guido@python.org> parents: 5396 diff changeset	147 }
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	148 /* 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	149 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	150 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	151 PyObject_INIT(op, &PyFloat_Type);
27 82c7bab78bb1 New errors. Guido van Rossum <guido@python.org> parents: 6 diff changeset	152 op->ob_fval = fval;
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	153 return (PyObject *) op;
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	154 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	155
14783 77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	156 /**************************************************************************
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	157 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	158 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	159
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	160 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	161 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	162 help from this function!).
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	163
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	164 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	165 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	166 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	167
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	168 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	169 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	170 *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	171 **************************************************************************/
11383 aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	172 PyObject *
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	173 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	174 {
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	175 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	176 double x;
14783 77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	177 char buffer[256]; /* for errors */
19343 7257e87e0720 Patch #445762: Support --disable-unicode Martin v. Löwis <martin@v.loewis.de> parents: 19051 diff changeset	178 #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	179 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	180 #endif
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36235 diff changeset	181 Py_ssize_t len;
11383 aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	182
14783 77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	183 if (pend)
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	184 *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	185 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	186 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	187 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	188 }
19343 7257e87e0720 Patch #445762: Support --disable-unicode Martin v. Löwis <martin@v.loewis.de> parents: 19051 diff changeset	189 #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	190 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	191 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	192 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	193 "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	194 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	195 }
14783 77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	196 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	197 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	198 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	199 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 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	201 s = s_buffer;
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36235 diff changeset	202 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	203 }
19343 7257e87e0720 Patch #445762: Support --disable-unicode Martin v. Löwis <martin@v.loewis.de> parents: 19051 diff changeset	204 #endif
11969 74b7213fb609 Many changes for Unicode, by Marc-Andre Lemburg. Guido van Rossum <guido@python.org> parents: 11673 diff changeset	205 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	206 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	207 "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	208 return NULL;
11969 74b7213fb609 Many changes for Unicode, by Marc-Andre Lemburg. Guido van Rossum <guido@python.org> parents: 11673 diff changeset	209 }
11383 aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	210
11969 74b7213fb609 Many changes for Unicode, by Marc-Andre Lemburg. Guido van Rossum <guido@python.org> parents: 11673 diff changeset	211 last = s + len;
11383 aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	212 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	213 s++;
14783 77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	214 if (*s == '\0') {
11383 aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	215 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	216 return NULL;
aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	217 }
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	218 sp = s;
14783 77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	219 /* 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	220 * 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	221 * 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	222 * 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	223 * 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	224 * key off errno.
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	225 */
14851 5449302c4d2e Replace SIGFPE paranoia around strtod and atof. I don't believe these Tim Peters <tim.peters@gmail.com> parents: 14783 diff changeset	226 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	227 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	228 PyFPE_END_PROTECT(x)
11383 aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	229 errno = 0;
aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	230 /* 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	231 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	232 if (end > last)
aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	233 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	234 /* 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	235 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	236 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	237 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	238
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 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	240 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	241 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	242 }
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 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	244 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 }
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 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	247 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	248 }
47889 4bf84035cb5f Issue 3188: accept float('infinity') as well as float('inf'). This Mark Dickinson <dickinsm@gmail.com> parents: 47822 diff changeset	249 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	250 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	251 }
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	252 #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	253 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	254 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	255 }
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	256 #endif
21079 8cef75cacb01 PyFloat_FromString(): Conversion of sprintf() to PyOS_snprintf() for Barry Warsaw <barry@python.org> parents: 20829 diff changeset	257 PyOS_snprintf(buffer, sizeof(buffer),
8cef75cacb01 PyFloat_FromString(): Conversion of sprintf() to PyOS_snprintf() for Barry Warsaw <barry@python.org> parents: 20829 diff changeset	258 "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	259 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	260 return NULL;
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	261 }
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	262 /* 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	263 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	264 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	265 end++;
aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	266 if (*end != '\0') {
21079 8cef75cacb01 PyFloat_FromString(): Conversion of sprintf() to PyOS_snprintf() for Barry Warsaw <barry@python.org> parents: 20829 diff changeset	267 PyOS_snprintf(buffer, sizeof(buffer),
8cef75cacb01 PyFloat_FromString(): Conversion of sprintf() to PyOS_snprintf() for Barry Warsaw <barry@python.org> parents: 20829 diff changeset	268 "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	269 PyErr_SetString(PyExc_ValueError, buffer);
aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	270 return NULL;
aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	271 }
11969 74b7213fb609 Many changes for Unicode, by Marc-Andre Lemburg. Guido van Rossum <guido@python.org> parents: 11673 diff changeset	272 else if (end != last) {
11383 aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	273 PyErr_SetString(PyExc_ValueError,
aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	274 "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	275 return NULL;
aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	276 }
14783 77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	277 if (x == 0.0) {
77eddddbb7cc Fix for SF bug 110624: float literals behave inconsistently. Tim Peters <tim.peters@gmail.com> parents: 14616 diff changeset	278 /* 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	279 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	280 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	281 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	282 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	283 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	284 }
aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	285 return PyFloat_FromDouble(x);
aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	286 }
aca7b5eaf5e8 Mainlining the string_methods branch. See branch revision log Barry Warsaw <barry@python.org> parents: 10833 diff changeset	287
1313 6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c. Guido van Rossum <guido@python.org> parents: 1271 diff changeset	288 static void
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	289 float_dealloc(PyFloatObject *op)
745 c7b23cc8cded answer lint's complaints Guido van Rossum <guido@python.org> parents: 632 diff changeset	290 {
20277 2983b54256c7 Enable GC for new-style instances. This touches lots of files, since Guido van Rossum <guido@python.org> parents: 19976 diff changeset	291 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	292 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	293 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	294 }
2983b54256c7 Enable GC for new-style instances. This touches lots of files, since Guido van Rossum <guido@python.org> parents: 19976 diff changeset	295 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	296 Py_TYPE(op)->tp_free((PyObject *)op);
745 c7b23cc8cded answer lint's complaints Guido van Rossum <guido@python.org> parents: 632 diff changeset	297 }
c7b23cc8cded answer lint's complaints Guido van Rossum <guido@python.org> parents: 632 diff changeset	298
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	299 double
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	300 PyFloat_AsDouble(PyObject *op)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	301 {
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	302 PyNumberMethods *nb;
d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	303 PyFloatObject *fo;
1746 1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1347 diff changeset	304 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	305
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	306 if (op && PyFloat_Check(op))
d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	307 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	308
26272 fbccef8b3153 Improve exception message raised by PyFloat_AsDouble if the object does not Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 24898 diff changeset	309 if (op == NULL) {
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	310 PyErr_BadArgument();
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	311 return -1;
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	312 }
20823 c7aa332a2ffa SF bug #477221: abs and divmod act oddly with -0.0. Tim Peters <tim.peters@gmail.com> parents: 20654 diff changeset	313
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	314 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	315 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	316 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	317 }
fbccef8b3153 Improve exception message raised by PyFloat_AsDouble if the object does not Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 24898 diff changeset	318
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	319 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	320 if (fo == NULL)
1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1347 diff changeset	321 return -1;
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	322 if (!PyFloat_Check(fo)) {
d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	323 PyErr_SetString(PyExc_TypeError,
d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	324 "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	325 return -1;
1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1347 diff changeset	326 }
20823 c7aa332a2ffa SF bug #477221: abs and divmod act oddly with -0.0. Tim Peters <tim.peters@gmail.com> parents: 20654 diff changeset	327
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	328 val = PyFloat_AS_DOUBLE(fo);
d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	329 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	330
1746 1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1347 diff changeset	331 return val;
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	332 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	333
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	334 /* Methods */
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	335
21097 9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	336 static void
9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	337 format_float(char buf, size_t buflen, PyFloatObject v, int precision)
6 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 register char *cp;
32305 13656d58d450 Patch #774665: Make Python LC_NUMERIC agnostic. Martin v. Löwis <martin@v.loewis.de> parents: 32150 diff changeset	340 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	341 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	342
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	343 /* Subroutine for float_repr and float_print.
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	344 We want float numbers to be recognizable as such,
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	345 i.e., they should contain a decimal point or an exponent.
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	346 However, %g may print the number as an integer;
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	347 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	348
9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	349 assert(PyFloat_Check(v));
32305 13656d58d450 Patch #774665: Make Python LC_NUMERIC agnostic. Martin v. Löwis <martin@v.loewis.de> parents: 32150 diff changeset	350 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	351 PyOS_ascii_formatd(buf, buflen, format, v->ob_fval);
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	352 cp = buf;
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	353 if (*cp == '-')
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	354 cp++;
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	355 for (; *cp != '\0'; cp++) {
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	356 /* Any non-digit means it's not an integer;
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	357 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	358 if (!isdigit(Py_CHARMASK(*cp)))
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	359 break;
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	360 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	361 if (*cp == '\0') {
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	362 *cp++ = '.';
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	363 *cp++ = '0';
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	364 *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	365 return;
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	366 }
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	367 /* 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	368 * 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	369 * 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	370 */
1d69aabf6f7f Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). Christian Heimes <christian@cheimes.de> parents: 44267 diff changeset	371 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	372 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	373 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	374 /* 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	375 * 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	376 */
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 #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	378 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	379 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	380 }
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 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	382 #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	383 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	384 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	385 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	386 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	387 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	388 }
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 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	390 }
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
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	392 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	393
21097 9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	394 /* 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	395 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	396 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	397 */
9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	398 void
9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	399 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	400 {
9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	401 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	402 }
9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	403
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	404 /* 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	405 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	406 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	407 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	408 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	409 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	410 */
47822 3ada46f2321d Revert 64424, 64438, and 64439. Raymond Hettinger <python@rcn.com> parents: 47791 diff changeset	411 #define CONVERT_TO_DOUBLE(obj, dbl) \
3ada46f2321d Revert 64424, 64438, and 64439. Raymond Hettinger <python@rcn.com> parents: 47791 diff changeset	412 if (PyFloat_Check(obj)) \
3ada46f2321d Revert 64424, 64438, and 64439. Raymond Hettinger <python@rcn.com> parents: 47791 diff changeset	413 dbl = PyFloat_AS_DOUBLE(obj); \
3ada46f2321d Revert 64424, 64438, and 64439. Raymond Hettinger <python@rcn.com> parents: 47791 diff changeset	414 else if (convert_to_double(&(obj), &(dbl)) < 0) \
3ada46f2321d Revert 64424, 64438, and 64439. Raymond Hettinger <python@rcn.com> parents: 47791 diff changeset	415 return obj;
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	416
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	417 static int
19674 715244108faa Raise OverflowError when appropriate on long->float conversion. Most of Tim Peters <tim.peters@gmail.com> parents: 19673 diff changeset	418 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	419 {
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	420 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	421
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	422 if (PyInt_Check(obj)) {
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	423 *dbl = (double)PyInt_AS_LONG(obj);
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 else if (PyLong_Check(obj)) {
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	426 *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	427 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	428 *v = NULL;
715244108faa Raise OverflowError when appropriate on long->float conversion. Most of Tim Peters <tim.peters@gmail.com> parents: 19673 diff changeset	429 return -1;
715244108faa Raise OverflowError when appropriate on long->float conversion. Most of Tim Peters <tim.peters@gmail.com> parents: 19673 diff changeset	430 }
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	431 }
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	432 else {
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	433 Py_INCREF(Py_NotImplemented);
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	434 *v = Py_NotImplemented;
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	435 return -1;
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 return 0;
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	438 }
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	439
11631 cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	440 /* 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	441
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	442 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	443 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	444 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	445 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	446 hardware.
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	447
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	448 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	449 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	450 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	451
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
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	454 #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	455 #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	456
21097 9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	457 /* 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	458 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	459 */
11631 cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	460 void
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	461 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	462 {
21097 9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	463 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	464 }
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	465
17707 fe4c1034b480 SF bug #422177: Results from .pyc differs from .py Tim Peters <tim.peters@gmail.com> parents: 17029 diff changeset	466 void
fe4c1034b480 SF bug #422177: Results from .pyc differs from .py Tim Peters <tim.peters@gmail.com> parents: 17029 diff changeset	467 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	468 {
21097 9ba3c82946b8 PyFloat_AsStringEx(): This function takes an output char* but doesn't Tim Peters <tim.peters@gmail.com> parents: 21079 diff changeset	469 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	470 }
fe4c1034b480 SF bug #422177: Results from .pyc differs from .py Tim Peters <tim.peters@gmail.com> parents: 17029 diff changeset	471
745 c7b23cc8cded answer lint's complaints Guido van Rossum <guido@python.org> parents: 632 diff changeset	472 /* ARGSUSED */
284 6ac402023cac printobject now returns an error code Guido van Rossum <guido@python.org> parents: 268 diff changeset	473 static int
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	474 float_print(PyFloatObject v, FILE fp, int flags)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	475 {
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	476 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	477 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	478 (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	479 Py_BEGIN_ALLOW_THREADS
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	480 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	481 Py_END_ALLOW_THREADS
284 6ac402023cac printobject now returns an error code Guido van Rossum <guido@python.org> parents: 268 diff changeset	482 return 0;
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	483 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	484
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	485 static PyObject *
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	486 float_repr(PyFloatObject *v)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	487 {
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	488 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	489 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	490
47527 52294af4b663 This reverts r63675 based on the discussion in this thread: Gregory P. Smith <greg@mad-scientist.com> parents: 47392 diff changeset	491 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	492 }
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	493
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	494 static PyObject *
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	495 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	496 {
cf7a0f1b7b48 Implement the other easy thing: repr() of a float now uses %.17g, Guido van Rossum <guido@python.org> parents: 11383 diff changeset	497 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	498 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	499 return PyString_FromString(buf);
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	500 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	501
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	502 /* 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	503 * 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	504 * 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	505 * 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	506 * 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	507 * 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	508 * 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	509 * 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	510 * 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	511 * 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	512 * 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	513 * 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	514 * 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	515 */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	516
31553 a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	517 static PyObject*
a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	518 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	519 {
a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	520 double i, j;
a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	521 int r = 0;
a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	522
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	523 assert(PyFloat_Check(v));
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	524 i = PyFloat_AS_DOUBLE(v);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	525
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	526 /* 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	527 * 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	528 */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	529 if (PyFloat_Check(w))
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	530 j = PyFloat_AS_DOUBLE(w);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	531
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	532 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	533 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	534 /* 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	535 * 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	536 * 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	537 */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	538 j = 0.0;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	539 else
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	540 goto Unimplemented;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	541 }
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 else if (PyInt_Check(w)) {
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	544 long jj = PyInt_AS_LONG(w);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	545 /* 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	546 * 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	547 * bits.
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	548 */
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	549 #if SIZEOF_LONG > 6
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	550 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	551 if (abs >> 48) {
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	552 /* 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	553 * PyLong path.
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	554 */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	555 PyObject *result;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	556 PyObject *ww = PyLong_FromLong(jj);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	557
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	558 if (ww == NULL)
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	559 return NULL;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	560 result = float_richcompare(v, ww, op);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	561 Py_DECREF(ww);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	562 return result;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	563 }
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	564 #endif
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	565 j = (double)jj;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	566 assert((long)j == jj);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	567 }
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 else if (PyLong_Check(w)) {
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	570 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	571 int wsign = _PyLong_Sign(w);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	572 size_t nbits;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	573 int exponent;
31553 a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	574
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	575 if (vsign != wsign) {
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	576 /* Magnitudes are irrelevant -- the signs alone
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	577 * determine the outcome.
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	578 */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	579 i = (double)vsign;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	580 j = (double)wsign;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	581 goto Compare;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	582 }
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	583 /* The signs are the same. */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	584 /* 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	585 nbits = _PyLong_NumBits(w);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	586 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	587 /* 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	588 * 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	589 * 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	590 * 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	591 * finite float.
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	592 */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	593 PyErr_Clear();
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	594 i = (double)vsign;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	595 assert(wsign != 0);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	596 j = wsign * 2.0;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	597 goto Compare;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	598 }
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	599 if (nbits <= 48) {
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	600 j = PyLong_AsDouble(w);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	601 /* 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	602 assert(j != -1.0 \|\| ! PyErr_Occurred());
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	603 goto Compare;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	604 }
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	605 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	606 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	607 * 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	608 * vsign != wsign branch at the start */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	609 /* 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	610 if (vsign < 0) {
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	611 /* "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	612 * comparator.
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	613 */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	614 i = -i;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	615 op = _Py_SwappedOp[op];
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	616 }
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	617 assert(i > 0.0);
36235 9f66bdd5a061 Fix icc warnings: remove unused variable Neal Norwitz <nnorwitz@gmail.com> parents: 35999 diff changeset	618 (void) frexp(i, &exponent);
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	619 /* 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	620 * 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	621 */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	622 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	623 i = 1.0;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	624 j = 2.0;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	625 goto Compare;
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 ((size_t)exponent > nbits) {
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	628 i = 2.0;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	629 j = 1.0;
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 /* 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	633 * 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	634 * outcome.
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	635 */
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 double fracpart;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	638 double intpart;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	639 PyObject *result = NULL;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	640 PyObject *one = NULL;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	641 PyObject *vv = NULL;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	642 PyObject *ww = w;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	643
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	644 if (wsign < 0) {
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	645 ww = PyNumber_Negative(w);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	646 if (ww == NULL)
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	647 goto Error;
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 else
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	650 Py_INCREF(ww);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	651
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	652 fracpart = modf(i, &intpart);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	653 vv = PyLong_FromDouble(intpart);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	654 if (vv == NULL)
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	655 goto Error;
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 if (fracpart != 0.0) {
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	658 /* 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	659 * to represent the lost fraction.
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	660 */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	661 PyObject *temp;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	662
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	663 one = PyInt_FromLong(1);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	664 if (one == NULL)
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	665 goto Error;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	666
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	667 temp = PyNumber_Lshift(ww, one);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	668 if (temp == NULL)
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	669 goto Error;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	670 Py_DECREF(ww);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	671 ww = temp;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	672
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	673 temp = PyNumber_Lshift(vv, one);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	674 if (temp == NULL)
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	675 goto Error;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	676 Py_DECREF(vv);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	677 vv = temp;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	678
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	679 temp = PyNumber_Or(vv, one);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	680 if (temp == NULL)
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	681 goto Error;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	682 Py_DECREF(vv);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	683 vv = temp;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	684 }
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	685
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	686 r = PyObject_RichCompareBool(vv, ww, op);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	687 if (r < 0)
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	688 goto Error;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	689 result = PyBool_FromLong(r);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	690 Error:
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	691 Py_XDECREF(vv);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	692 Py_XDECREF(ww);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	693 Py_XDECREF(one);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	694 return result;
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	695 }
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	696 } /* else if (PyLong_Check(w)) */
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	697
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	698 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	699 goto Unimplemented;
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 Compare:
31553 a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	702 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	703 switch (op) {
a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	704 case Py_EQ:
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	705 r = i == j;
31553 a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	706 break;
a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	707 case Py_NE:
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	708 r = i != j;
31553 a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	709 break;
a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	710 case Py_LE:
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	711 r = i <= j;
31553 a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	712 break;
a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	713 case Py_GE:
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	714 r = i >= j;
31553 a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	715 break;
a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	716 case Py_LT:
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	717 r = i < j;
31553 a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	718 break;
a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	719 case Py_GT:
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	720 r = i > j;
31553 a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	721 break;
a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	722 }
31589 ca3c998afa55 Pass a variable that actually exists to PyFPE_END_PROTECT in Michael W. Hudson <mwh@python.net> parents: 31553 diff changeset	723 PyFPE_END_PROTECT(r)
31553 a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	724 return PyBool_FromLong(r);
33547 702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	725
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	726 Unimplemented:
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	727 Py_INCREF(Py_NotImplemented);
702367da2c72 SF bug #513866: Float/long comparison anomaly. Tim Peters <tim.peters@gmail.com> parents: 32533 diff changeset	728 return Py_NotImplemented;
31553 a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	729 }
a6d8d5ace6a7 "Fix" (for certain configurations of the planets, including Michael W. Hudson <mwh@python.net> parents: 31384 diff changeset	730
1257 1cabc2b6c970 * Changed all copyright messages to include 1993. Guido van Rossum <guido@python.org> parents: 1252 diff changeset	731 static long
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	732 float_hash(PyFloatObject *v)
1257 1cabc2b6c970 * Changed all copyright messages to include 1993. Guido van Rossum <guido@python.org> parents: 1252 diff changeset	733 {
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	734 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	735 }
1cabc2b6c970 * Changed all copyright messages to include 1993. Guido van Rossum <guido@python.org> parents: 1252 diff changeset	736
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	737 static PyObject *
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	738 float_add(PyObject v, PyObject w)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	739 {
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	740 double a,b;
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	741 CONVERT_TO_DOUBLE(v, a);
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	742 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	743 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	744 a = a + b;
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	745 PyFPE_END_PROTECT(a)
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	746 return PyFloat_FromDouble(a);
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	747 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	748
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	749 static PyObject *
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	750 float_sub(PyObject v, PyObject w)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	751 {
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	752 double a,b;
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	753 CONVERT_TO_DOUBLE(v, a);
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	754 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	755 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	756 a = a - b;
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	757 PyFPE_END_PROTECT(a)
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	758 return PyFloat_FromDouble(a);
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	759 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	760
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	761 static PyObject *
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	762 float_mul(PyObject v, PyObject w)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	763 {
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	764 double a,b;
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	765 CONVERT_TO_DOUBLE(v, a);
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	766 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	767 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	768 a = a * b;
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	769 PyFPE_END_PROTECT(a)
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	770 return PyFloat_FromDouble(a);
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	771 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	772
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	773 static PyObject *
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	774 float_div(PyObject v, PyObject w)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	775 {
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	776 double a,b;
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	777 CONVERT_TO_DOUBLE(v, a);
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	778 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	779 #ifdef Py_NAN
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	780 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	781 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	782 "float division");
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	783 return NULL;
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	784 }
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	785 #endif
5118 002865af55e5 Changes for Lee Busby's SIGFPE patch set. Guido van Rossum <guido@python.org> parents: 4933 diff changeset	786 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	787 a = a / b;
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	788 PyFPE_END_PROTECT(a)
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	789 return PyFloat_FromDouble(a);
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	790 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	791
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	792 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	793 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	794 {
c0a44829bcd5 Add warning mode for classic division, almost exactly as specified in Guido van Rossum <guido@python.org> parents: 19590 diff changeset	795 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	796 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	797 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	798 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	799 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	800 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	801 #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	802 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	803 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	804 "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	805 return NULL;
c0a44829bcd5 Add warning mode for classic division, almost exactly as specified in Guido van Rossum <guido@python.org> parents: 19590 diff changeset	806 }
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	807 #endif
19633 c0a44829bcd5 Add warning mode for classic division, almost exactly as specified in Guido van Rossum <guido@python.org> parents: 19590 diff changeset	808 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	809 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	810 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	811 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	812 }
c0a44829bcd5 Add warning mode for classic division, almost exactly as specified in Guido van Rossum <guido@python.org> parents: 19590 diff changeset	813
c0a44829bcd5 Add warning mode for classic division, almost exactly as specified in Guido van Rossum <guido@python.org> parents: 19590 diff changeset	814 static PyObject *
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	815 float_rem(PyObject v, PyObject w)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	816 {
632 0c1938f2e0c0 Get rid of redundant type checks. Guido van Rossum <guido@python.org> parents: 496 diff changeset	817 double vx, wx;
10833 135c1ec9636c Tim Peters writes: Guido van Rossum <guido@python.org> parents: 10432 diff changeset	818 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	819 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	820 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	821 #ifdef Py_NAN
632 0c1938f2e0c0 Get rid of redundant type checks. Guido van Rossum <guido@python.org> parents: 496 diff changeset	822 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	823 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	824 "float modulo");
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	825 return NULL;
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	826 }
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	827 #endif
5118 002865af55e5 Changes for Lee Busby's SIGFPE patch set. Guido van Rossum <guido@python.org> parents: 4933 diff changeset	828 PyFPE_START_PROTECT("modulo", return 0)
632 0c1938f2e0c0 Get rid of redundant type checks. Guido van Rossum <guido@python.org> parents: 496 diff changeset	829 mod = fmod(vx, wx);
10833 135c1ec9636c Tim Peters writes: Guido van Rossum <guido@python.org> parents: 10432 diff changeset	830 /* note: checking mod*wx < 0 is incorrect -- underflows to
135c1ec9636c Tim Peters writes: Guido van Rossum <guido@python.org> parents: 10432 diff changeset	831 0 if wx < sqrt(smallest nonzero double) */
135c1ec9636c Tim Peters writes: Guido van Rossum <guido@python.org> parents: 10432 diff changeset	832 if (mod && ((wx < 0) != (mod < 0))) {
632 0c1938f2e0c0 Get rid of redundant type checks. Guido van Rossum <guido@python.org> parents: 496 diff changeset	833 mod += wx;
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	834 }
5197 74c12704a0bd New form of PyFPE_END_PROTECT macro. Guido van Rossum <guido@python.org> parents: 5118 diff changeset	835 PyFPE_END_PROTECT(mod)
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	836 return PyFloat_FromDouble(mod);
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	837 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	838
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	839 static PyObject *
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	840 float_divmod(PyObject v, PyObject w)
227 7ec6058b539b Added (dummy) divmod and (functional) abs. Guido van Rossum <guido@python.org> parents: 145 diff changeset	841 {
391 caf8466dcc9c Finally implemented divmod(). Guido van Rossum <guido@python.org> parents: 284 diff changeset	842 double vx, wx;
10833 135c1ec9636c Tim Peters writes: Guido van Rossum <guido@python.org> parents: 10432 diff changeset	843 double div, mod, floordiv;
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	844 CONVERT_TO_DOUBLE(v, vx);
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	845 CONVERT_TO_DOUBLE(w, wx);
391 caf8466dcc9c Finally implemented divmod(). Guido van Rossum <guido@python.org> parents: 284 diff changeset	846 if (wx == 0.0) {
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	847 PyErr_SetString(PyExc_ZeroDivisionError, "float divmod()");
391 caf8466dcc9c Finally implemented divmod(). Guido van Rossum <guido@python.org> parents: 284 diff changeset	848 return NULL;
caf8466dcc9c Finally implemented divmod(). Guido van Rossum <guido@python.org> parents: 284 diff changeset	849 }
5118 002865af55e5 Changes for Lee Busby's SIGFPE patch set. Guido van Rossum <guido@python.org> parents: 4933 diff changeset	850 PyFPE_START_PROTECT("divmod", return 0)
391 caf8466dcc9c Finally implemented divmod(). Guido van Rossum <guido@python.org> parents: 284 diff changeset	851 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	852 /* 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	853 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	854 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	855 not be an exact integral value after the division, although
135c1ec9636c Tim Peters writes: Guido van Rossum <guido@python.org> parents: 10432 diff changeset	856 it will always be very close to one.
135c1ec9636c Tim Peters writes: Guido van Rossum <guido@python.org> parents: 10432 diff changeset	857 */
391 caf8466dcc9c Finally implemented divmod(). Guido van Rossum <guido@python.org> parents: 284 diff changeset	858 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	859 if (mod) {
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	860 /* 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	861 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	862 mod += wx;
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	863 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	864 }
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	865 }
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	866 else {
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	867 /* 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	868 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	869 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	870 "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	871 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	872 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	873 mod = -mod;
391 caf8466dcc9c Finally implemented divmod(). Guido van Rossum <guido@python.org> parents: 284 diff changeset	874 }
10833 135c1ec9636c Tim Peters writes: Guido van Rossum <guido@python.org> parents: 10432 diff changeset	875 /* 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	876 if (div) {
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	877 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	878 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	879 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	880 }
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	881 else {
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	882 /* 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	883 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	884 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	885 }
95201153251c SF bug #477221: abs and divmod act oddly with -0.0 Tim Peters <tim.peters@gmail.com> parents: 20826 diff changeset	886 PyFPE_END_PROTECT(floordiv)
10833 135c1ec9636c Tim Peters writes: Guido van Rossum <guido@python.org> parents: 10432 diff changeset	887 return Py_BuildValue("(dd)", floordiv, mod);
227 7ec6058b539b Added (dummy) divmod and (functional) abs. Guido van Rossum <guido@python.org> parents: 145 diff changeset	888 }
7ec6058b539b Added (dummy) divmod and (functional) abs. Guido van Rossum <guido@python.org> parents: 145 diff changeset	889
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	890 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	891 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	892 {
257c938900a6 float_int_div(): For clarity, move this closer to the other float Tim Peters <tim.peters@gmail.com> parents: 21097 diff changeset	893 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	894
257c938900a6 float_int_div(): For clarity, move this closer to the other float Tim Peters <tim.peters@gmail.com> parents: 21097 diff changeset	895 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	896 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	897 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	898 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	899 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	900 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	901 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	902 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	903 }
257c938900a6 float_int_div(): For clarity, move this closer to the other float Tim Peters <tim.peters@gmail.com> parents: 21097 diff changeset	904
257c938900a6 float_int_div(): For clarity, move this closer to the other float Tim Peters <tim.peters@gmail.com> parents: 21097 diff changeset	905 static PyObject *
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	906 float_pow(PyObject v, PyObject w, PyObject *z)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	907 {
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	908 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	909
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	910 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	911 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	912 "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	913 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	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
15723 ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	916 CONVERT_TO_DOUBLE(v, iv);
ac7ae3ead88a Make float a new style number type. Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 15318 diff changeset	917 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	918
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	919 /* 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	920 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	921 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	922 }
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	923 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	924 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	925 PyErr_SetString(PyExc_ZeroDivisionError,
15318 8aa947e1eee8 Ka-Ping Yee <ping@lfw.org>: Fred Drake <fdrake@acm.org> parents: 15041 diff changeset	926 "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	927 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	928 }
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 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	930 }
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	931 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	932 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	933 }
29252 0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	934 if (iv < 0.0) {
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	935 /* 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	936 * 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	937 */
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	938 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	939 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	940 "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	941 return NULL;
29252 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 /* 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	944 * -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	945 * 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	946 * 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	947 * 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	948 * 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	949 * 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	950 */
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	951 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	952 /* 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	953 * 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	954 * 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	955 * indirectly.
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	956 */
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	957 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	958 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	959 }
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	960 /* 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	961 * 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	962 * the platform to do this correctly.
0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	963 */
3984 0613f17dcfd8 Correct wrong calculation of pow(0.0, 0.0, negative_number) Guido van Rossum <guido@python.org> parents: 3704 diff changeset	964 }
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	965 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	966 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	967 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	968 PyFPE_END_PROTECT(ix)
22228 4b6eda7d0c8f backport tim_one's checkin of Michael W. Hudson <mwh@python.net> parents: 21354 diff changeset	969 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	970 if (errno != 0) {
29252 0b76679bf3f9 SF bug 705231: Assertion failed, python aborts. Tim Peters <tim.peters@gmail.com> parents: 28368 diff changeset	971 /* 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	972 * 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	973 */
39642 981181d2a4fe Reverting the patch that tried to fix the issue whereby x*2 raises Alex Martelli <aleaxit@gmail.com>* parents: 39639 diff changeset	974 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	975 PyExc_ValueError);
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	976 return NULL;
27 82c7bab78bb1 New errors. Guido van Rossum <guido@python.org> parents: 6 diff changeset	977 }
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	978 return PyFloat_FromDouble(ix);
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	979 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	980
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	981 static PyObject *
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	982 float_neg(PyFloatObject *v)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	983 {
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	984 return PyFloat_FromDouble(-v->ob_fval);
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	985 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	986
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	987 static PyObject *
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	988 float_abs(PyFloatObject *v)
227 7ec6058b539b Added (dummy) divmod and (functional) abs. Guido van Rossum <guido@python.org> parents: 145 diff changeset	989 {
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	990 return PyFloat_FromDouble(fabs(v->ob_fval));
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	991 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	992
239 fda973f2a512 Added nonzero test Guido van Rossum <guido@python.org> parents: 227 diff changeset	993 static int
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	994 float_nonzero(PyFloatObject *v)
239 fda973f2a512 Added nonzero test Guido van Rossum <guido@python.org> parents: 227 diff changeset	995 {
fda973f2a512 Added nonzero test Guido van Rossum <guido@python.org> parents: 227 diff changeset	996 return v->ob_fval != 0.0;
fda973f2a512 Added nonzero test Guido van Rossum <guido@python.org> parents: 227 diff changeset	997 }
fda973f2a512 Added nonzero test Guido van Rossum <guido@python.org> parents: 227 diff changeset	998
1313 6ee380349c84 * Added gmtime/localtime/mktime and SYSV timezone globals to timemodule.c. Guido van Rossum <guido@python.org> parents: 1271 diff changeset	999 static int
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	1000 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	1001 {
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	1002 if (PyInt_Check(*pw)) {
d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	1003 long x = PyInt_AsLong(*pw);
d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	1004 *pw = PyFloat_FromDouble((double)x);
d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	1005 Py_INCREF(*pv);
955 03de67080c95 * classobject.[ch], {float,long,int}object.c, bltinmodule.c: Guido van Rossum <guido@python.org> parents: 795 diff changeset	1006 return 0;
03de67080c95 * classobject.[ch], {float,long,int}object.c, bltinmodule.c: Guido van Rossum <guido@python.org> parents: 795 diff changeset	1007 }
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	1008 else if (PyLong_Check(*pw)) {
27484 5ba7934a7ba0 Fix SF bug# 676155, RuntimeWarning with tp_compare Neal Norwitz <nnorwitz@gmail.com> parents: 26328 diff changeset	1009 double x = PyLong_AsDouble(*pw);
5ba7934a7ba0 Fix SF bug# 676155, RuntimeWarning with tp_compare Neal Norwitz <nnorwitz@gmail.com> parents: 26328 diff changeset	1010 if (x == -1.0 && PyErr_Occurred())
5ba7934a7ba0 Fix SF bug# 676155, RuntimeWarning with tp_compare Neal Norwitz <nnorwitz@gmail.com> parents: 26328 diff changeset	1011 return -1;
5ba7934a7ba0 Fix SF bug# 676155, RuntimeWarning with tp_compare Neal Norwitz <nnorwitz@gmail.com> parents: 26328 diff changeset	1012 *pw = PyFloat_FromDouble(x);
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	1013 Py_INCREF(*pv);
955 03de67080c95 * classobject.[ch], {float,long,int}object.c, bltinmodule.c: Guido van Rossum <guido@python.org> parents: 795 diff changeset	1014 return 0;
03de67080c95 * classobject.[ch], {float,long,int}object.c, bltinmodule.c: Guido van Rossum <guido@python.org> parents: 795 diff changeset	1015 }
19976 da00188d5270 Add additional coercion support for "self subtypes" to int, long, Guido van Rossum <guido@python.org> parents: 19889 diff changeset	1016 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	1017 Py_INCREF(*pv);
da00188d5270 Add additional coercion support for "self subtypes" to int, long, Guido van Rossum <guido@python.org> parents: 19889 diff changeset	1018 Py_INCREF(*pw);
da00188d5270 Add additional coercion support for "self subtypes" to int, long, Guido van Rossum <guido@python.org> parents: 19889 diff changeset	1019 return 0;
da00188d5270 Add additional coercion support for "self subtypes" to int, long, Guido van Rossum <guido@python.org> parents: 19889 diff changeset	1020 }
955 03de67080c95 * classobject.[ch], {float,long,int}object.c, bltinmodule.c: Guido van Rossum <guido@python.org> parents: 795 diff changeset	1021 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	1022 }
03de67080c95 * classobject.[ch], {float,long,int}object.c, bltinmodule.c: Guido van Rossum <guido@python.org> parents: 795 diff changeset	1023
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	1024 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	1025 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	1026 {
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	1027 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	1028 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	1029
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 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	1031 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	1032 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	1033 Py_RETURN_FALSE;
46792 8baeba13ae93 Issue #2801: fix bug in float.is_integer where ValueError Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	1034 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	1035 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	1036 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	1037 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	1038 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	1039 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	1040 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	1041 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	1042 }
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 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	1044 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	1045 }
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
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 #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	1048 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	1049 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	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 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	1052 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	1053 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	1054 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	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
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 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	1058 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	1059 {
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 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	1061 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	1062 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	1063 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	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
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 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	1067 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	1068 {
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 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	1070 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	1071 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	1072 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	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 #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	1075
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 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	1077 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	1078 {
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	1079 double x = PyFloat_AsDouble(v);
18838 a8575f358b9f SF bug #444510: int() should guarantee truncation. Tim Peters <tim.peters@gmail.com> parents: 17707 diff changeset	1080 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	1081
a8575f358b9f SF bug #444510: int() should guarantee truncation. Tim Peters <tim.peters@gmail.com> parents: 17707 diff changeset	1082 (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	1083 /* 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	1084 * 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	1085 * 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	1086 * 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	1087 * 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	1088 * 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	1089 * 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	1090 * 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	1091 * 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	1092 * 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	1093 * 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	1094 */
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 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	1096 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	1097 return PyInt_FromLong(aslong);
20654 edd9d0b3c47e SF patch #474590 -- RISC OS support Guido van Rossum <guido@python.org> parents: 20277 diff changeset	1098 }
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	1099 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	1100 }
2ed511171809 Made builtins int(), long(), float(), oct() and hex() more generic. Guido van Rossum <guido@python.org> parents: 955 diff changeset	1101
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	1102 static PyObject *
13454 fcc75a3748f5 ANSI-fication of the sources. Fred Drake <fdrake@acm.org> parents: 13447 diff changeset	1103 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	1104 {
34931 9a1b1e1ae653 Make subclasses of int, long, complex, float, and unicode perform type Brett Cannon <bcannon@gmail.com> parents: 33549 diff changeset	1105 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	1106 Py_INCREF(v);
9a1b1e1ae653 Make subclasses of int, long, complex, float, and unicode perform type Brett Cannon <bcannon@gmail.com> parents: 33549 diff changeset	1107 else
9a1b1e1ae653 Make subclasses of int, long, complex, float, and unicode perform type Brett Cannon <bcannon@gmail.com> parents: 33549 diff changeset	1108 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	1109 return v;
2ed511171809 Made builtins int(), long(), float(), oct() and hex() more generic. Guido van Rossum <guido@python.org> parents: 955 diff changeset	1110 }
2ed511171809 Made builtins int(), long(), float(), oct() and hex() more generic. Guido van Rossum <guido@python.org> parents: 955 diff changeset	1111
45024 f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1112 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	1113 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	1114 {
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1115 double self;
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1116 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	1117 int exponent;
45100 0b4e8afed663 Add protection from weirdness while scaling the mantissa to an integer. Raymond Hettinger <python@rcn.com> parents: 45099 diff changeset	1118 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	1119
45024 f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1120 PyObject *prev;
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1121 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	1122 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	1123 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	1124 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	1125 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	1126
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1127 #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	1128 prev = obj; \
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1129 obj = call; \
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1130 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	1131
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1132 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	1133
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1134 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	1135 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	1136 "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	1137 return NULL;
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1138 }
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1139 #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	1140 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	1141 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	1142 "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	1143 return NULL;
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1144 }
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1145 #endif
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1146
45094 beea73ca2b88 Issue #1996: float.as_integer_ratio() should return fraction in lowest terms. Raymond Hettinger <python@rcn.com> parents: 45060 diff changeset	1147 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	1148 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	1149 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	1150
45100 0b4e8afed663 Add protection from weirdness while scaling the mantissa to an integer. Raymond Hettinger <python@rcn.com> parents: 45099 diff changeset	1151 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	1152 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	1153 exponent--;
45100 0b4e8afed663 Add protection from weirdness while scaling the mantissa to an integer. Raymond Hettinger <python@rcn.com> parents: 45099 diff changeset	1154 }
45101 f5e18c9bde70 Simpler solution to handling non-IEEE 754 environments. Raymond Hettinger <python@rcn.com> parents: 45100 diff changeset	1155 /* 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	1156 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	1157 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	1158
45094 beea73ca2b88 Issue #1996: float.as_integer_ratio() should return fraction in lowest terms. Raymond Hettinger <python@rcn.com> parents: 45060 diff changeset	1159 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	1160 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	1161
45100 0b4e8afed663 Add protection from weirdness while scaling the mantissa to an integer. Raymond Hettinger <python@rcn.com> parents: 45099 diff changeset	1162 /* 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	1163 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	1164 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	1165 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	1166 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	1167 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	1168 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	1169 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	1170 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	1171 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	1172 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	1173 }
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1174 else {
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1175 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	1176 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	1177 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	1178 }
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1179
45095 5cb8288360e7 Integer ratio should return ints instead of longs whereever possible. Raymond Hettinger <python@rcn.com> parents: 45094 diff changeset	1180 /* 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	1181 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	1182 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	1183 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	1184 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	1185
45024 f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1186 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	1187
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1188 #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	1189 error:
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1190 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	1191 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	1192 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	1193 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	1194 }
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1195
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1196 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	1197 "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	1198 "\n"
45094 beea73ca2b88 Issue #1996: float.as_integer_ratio() should return fraction in lowest terms. Raymond Hettinger <python@rcn.com> parents: 45060 diff changeset	1199 "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	1200 "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	1201 "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	1202 "\n"
f062dda54894 Moved Rational._binary_float_to_ratio() to float.as_integer_ratio() because Jeffrey Yasskin <jyasskin@gmail.com> parents: 44940 diff changeset	1203 ">>> (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	1204 "(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	1205 ">>> (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	1206 "(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	1207 ">>> (-.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	1208 "(-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	1209
1049 2ed511171809 Made builtins int(), long(), float(), oct() and hex() more generic. Guido van Rossum <guido@python.org> parents: 955 diff changeset	1210
24280 1598a1e473e2 staticforward bites the dust. Jeremy Hylton <jeremy@alum.mit.edu> parents: 23832 diff changeset	1211 static PyObject *
19552 6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1212 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	1213
18933 09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1214 static PyObject *
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1215 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	1216 {
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1217 PyObject x = Py_False; / Integer zero */
36675 dba6494735d0 Revert backwards-incompatible const changes. Martin v. Löwis <martin@v.loewis.de> parents: 36501 diff changeset	1218 static char *kwlist[] = {"x", 0};
18933 09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1219
19552 6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1220 if (type != &PyFloat_Type)
6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1221 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	1222 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	1223 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	1224 if (PyString_Check(x))
18933 09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1225 return PyFloat_FromString(x, NULL);
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1226 return PyNumber_Float(x);
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1227 }
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1228
19552 6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1229 /* 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	1230 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	1231 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	1232 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	1233 */
6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1234 static PyObject *
6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1235 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	1236 {
37589 aeee85b6a5dd More C++-compliance. Note especially listobject.c - to get C++ to accept the Anthony Baxter <anthonybaxter@gmail.com> parents: 37304 diff changeset	1237 PyObject tmp, newobj;
19552 6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1238
6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1239 assert(PyType_IsSubtype(type, &PyFloat_Type));
6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1240 tmp = float_new(&PyFloat_Type, args, kwds);
6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1241 if (tmp == NULL)
6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1242 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	1243 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	1244 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	1245 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	1246 Py_DECREF(tmp);
19552 6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1247 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	1248 }
37589 aeee85b6a5dd More C++-compliance. Note especially listobject.c - to get C++ to accept the Anthony Baxter <anthonybaxter@gmail.com> parents: 37304 diff changeset	1249 ((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	1250 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	1251 return newobj;
19552 6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1252 }
6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1253
27521 17bfd5dbc0f1 Implement appropriate __getnewargs__ for all immutable subclassable builtin Guido van Rossum <guido@python.org> parents: 27484 diff changeset	1254 static PyObject *
17bfd5dbc0f1 Implement appropriate __getnewargs__ for all immutable subclassable builtin Guido van Rossum <guido@python.org> parents: 27484 diff changeset	1255 float_getnewargs(PyFloatObject *v)
17bfd5dbc0f1 Implement appropriate __getnewargs__ for all immutable subclassable builtin Guido van Rossum <guido@python.org> parents: 27484 diff changeset	1256 {
17bfd5dbc0f1 Implement appropriate __getnewargs__ for all immutable subclassable builtin Guido van Rossum <guido@python.org> parents: 27484 diff changeset	1257 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	1258 }
17bfd5dbc0f1 Implement appropriate __getnewargs__ for all immutable subclassable builtin Guido van Rossum <guido@python.org> parents: 27484 diff changeset	1259
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1260 /* 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	1261
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1262 typedef enum {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1263 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	1264 } float_format_type;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1265
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1266 static float_format_type double_format, float_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1267 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	1268
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1269 static PyObject *
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1270 float_getformat(PyTypeObject v, PyObject arg)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1271 {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1272 char* s;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1273 float_format_type r;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1274
47527 52294af4b663 This reverts r63675 based on the discussion in this thread: Gregory P. Smith <greg@mad-scientist.com> parents: 47392 diff changeset	1275 if (!PyString_Check(arg)) {
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1276 PyErr_Format(PyExc_TypeError,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1277 "__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	1278 Py_TYPE(arg)->tp_name);
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1279 return NULL;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1280 }
47527 52294af4b663 This reverts r63675 based on the discussion in this thread: Gregory P. Smith <greg@mad-scientist.com> parents: 47392 diff changeset	1281 s = PyString_AS_STRING(arg);
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1282 if (strcmp(s, "double") == 0) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1283 r = double_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1284 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1285 else if (strcmp(s, "float") == 0) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1286 r = float_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1287 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1288 else {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1289 PyErr_SetString(PyExc_ValueError,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1290 "__getformat__() argument 1 must be "
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1291 "'double' or 'float'");
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1292 return NULL;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1293 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1294
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1295 switch (r) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1296 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	1297 return PyString_FromString("unknown");
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1298 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	1299 return PyString_FromString("IEEE, little-endian");
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1300 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	1301 return PyString_FromString("IEEE, big-endian");
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1302 default:
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1303 Py_FatalError("insane float_format or double_format");
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1304 return NULL;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1305 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1306 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1307
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1308 PyDoc_STRVAR(float_getformat_doc,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1309 "float.__getformat__(typestr) -> string\n"
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1310 "\n"
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1311 "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	1312 "used in Python's test suite.\n"
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1313 "\n"
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1314 "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	1315 "'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	1316 "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	1317
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1318 static PyObject *
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1319 float_setformat(PyTypeObject v, PyObject args)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1320 {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1321 char* typestr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1322 char* format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1323 float_format_type f;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1324 float_format_type detected;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1325 float_format_type *p;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1326
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1327 if (!PyArg_ParseTuple(args, "ss:__setformat__", &typestr, &format))
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1328 return NULL;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1329
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1330 if (strcmp(typestr, "double") == 0) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1331 p = &double_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1332 detected = detected_double_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1333 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1334 else if (strcmp(typestr, "float") == 0) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1335 p = &float_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1336 detected = detected_float_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1337 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1338 else {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1339 PyErr_SetString(PyExc_ValueError,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1340 "__setformat__() argument 1 must "
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1341 "be 'double' or 'float'");
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1342 return NULL;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1343 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1344
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1345 if (strcmp(format, "unknown") == 0) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1346 f = unknown_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1347 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1348 else if (strcmp(format, "IEEE, little-endian") == 0) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1349 f = ieee_little_endian_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1350 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1351 else if (strcmp(format, "IEEE, big-endian") == 0) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1352 f = ieee_big_endian_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1353 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1354 else {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1355 PyErr_SetString(PyExc_ValueError,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1356 "__setformat__() argument 2 must be "
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1357 "'unknown', 'IEEE, little-endian' or "
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1358 "'IEEE, big-endian'");
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1359 return NULL;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1360
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1361 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1362
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1363 if (f != unknown_format && f != detected) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1364 PyErr_Format(PyExc_ValueError,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1365 "can only set %s format to 'unknown' or the "
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1366 "detected platform value", typestr);
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1367 return NULL;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1368 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1369
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1370 *p = f;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1371 Py_RETURN_NONE;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1372 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1373
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1374 PyDoc_STRVAR(float_setformat_doc,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1375 "float.__setformat__(typestr, fmt) -> None\n"
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1376 "\n"
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1377 "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	1378 "used in Python's test suite.\n"
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1379 "\n"
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1380 "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	1381 "'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	1382 "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	1383 "\n"
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1384 "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	1385 "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	1386
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	1387 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	1388 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	1389 {
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1390 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	1391 }
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1392
45381 b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1393 static PyObject *
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1394 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	1395 {
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1396 PyObject *format_spec;
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1397
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1398 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	1399 return NULL;
47294 4fe192d48960 Renamed PyString to PyBytes Christian Heimes <christian@cheimes.de> parents: 46792 diff changeset	1400 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	1401 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	1402 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	1403 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	1404 if (PyUnicode_Check(format_spec)) {
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1405 /* 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	1406 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	1407 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	1408
47392 47ef9a806ce9 Refactor and clean up str.format() code (and helpers) in advance of optimizations. Eric Smith <eric@trueblade.com> parents: 47294 diff changeset	1409 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	1410 return NULL;
45381 b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1411
47392 47ef9a806ce9 Refactor and clean up str.format() code (and helpers) in advance of optimizations. Eric Smith <eric@trueblade.com> parents: 47294 diff changeset	1412 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	1413 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	1414 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	1415
47392 47ef9a806ce9 Refactor and clean up str.format() code (and helpers) in advance of optimizations. Eric Smith <eric@trueblade.com> parents: 47294 diff changeset	1416 Py_DECREF(str_spec);
45381 b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1417 return result;
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1418 }
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1419 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	1420 return NULL;
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1421 }
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1422
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1423 PyDoc_STRVAR(float__format__doc,
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1424 "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	1425 "\n"
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1426 "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	1427
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1428
27521 17bfd5dbc0f1 Implement appropriate __getnewargs__ for all immutable subclassable builtin Guido van Rossum <guido@python.org> parents: 27484 diff changeset	1429 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	1430 {"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	1431 "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	1432 {"__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	1433 "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	1434 {"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	1435 float_as_integer_ratio_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	1436 {"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	1437 "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	1438 #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	1439 {"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	1440 "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	1441 {"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	1442 "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	1443 {"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	1444 "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	1445 #endif
27521 17bfd5dbc0f1 Implement appropriate __getnewargs__ for all immutable subclassable builtin Guido van Rossum <guido@python.org> parents: 27484 diff changeset	1446 {"__getnewargs__", (PyCFunction)float_getnewargs, METH_NOARGS},
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1447 {"__getformat__", (PyCFunction)float_getformat,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1448 METH_O\|METH_CLASS, float_getformat_doc},
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1449 {"__setformat__", (PyCFunction)float_setformat,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1450 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	1451 {"__format__", (PyCFunction)float__format__,
b7231bf6bfb7 Backport of PEP 3101, Advanced String Formatting, from py3k. Eric Smith <eric@trueblade.com> parents: 45143 diff changeset	1452 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	1453 {NULL, NULL} /* sentinel */
17bfd5dbc0f1 Implement appropriate __getnewargs__ for all immutable subclassable builtin Guido van Rossum <guido@python.org> parents: 27484 diff changeset	1454 };
17bfd5dbc0f1 Implement appropriate __getnewargs__ for all immutable subclassable builtin Guido van Rossum <guido@python.org> parents: 27484 diff changeset	1455
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	1456 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	1457 {"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	1458 (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	1459 "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	1460 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	1461 {"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	1462 (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	1463 "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	1464 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	1465 {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	1466 };
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 44350 diff changeset	1467
23832 ed1ba37a46b7 Patch #568124: Add doc string macros. Martin v. Löwis <martin@v.loewis.de> parents: 23344 diff changeset	1468 PyDoc_STRVAR(float_doc,
18933 09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1469 "float(x) -> floating point number\n\
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1470 \n\
23832 ed1ba37a46b7 Patch #568124: Add doc string macros. Martin v. Löwis <martin@v.loewis.de> parents: 23344 diff changeset	1471 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	1472
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1473
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	1474 static PyNumberMethods float_as_number = {
37304 79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36759 diff changeset	1475 float_add, /nb_add/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36759 diff changeset	1476 float_sub, /nb_subtract/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36759 diff changeset	1477 float_mul, /nb_multiply/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36759 diff changeset	1478 float_classic_div, /nb_divide/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36759 diff changeset	1479 float_rem, /nb_remainder/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36759 diff changeset	1480 float_divmod, /nb_divmod/
79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36759 diff changeset	1481 float_pow, /nb_power/
1746 1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1347 diff changeset	1482 (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	1483 (unaryfunc)float_float, /nb_positive/
1746 1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1347 diff changeset	1484 (unaryfunc)float_abs, /nb_absolute/
1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1347 diff changeset	1485 (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	1486 0, /nb_invert/
d3d328680328 Added NULL function pointers for shift and mask ops. Guido van Rossum <guido@python.org> parents: 391 diff changeset	1487 0, /nb_lshift/
d3d328680328 Added NULL function pointers for shift and mask ops. Guido van Rossum <guido@python.org> parents: 391 diff changeset	1488 0, /nb_rshift/
d3d328680328 Added NULL function pointers for shift and mask ops. Guido van Rossum <guido@python.org> parents: 391 diff changeset	1489 0, /nb_and/
d3d328680328 Added NULL function pointers for shift and mask ops. Guido van Rossum <guido@python.org> parents: 391 diff changeset	1490 0, /nb_xor/
d3d328680328 Added NULL function pointers for shift and mask ops. Guido van Rossum <guido@python.org> parents: 391 diff changeset	1491 0, /nb_or/
37304 79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36759 diff changeset	1492 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	1493 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	1494 float_trunc, /nb_long/
37304 79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36759 diff changeset	1495 float_float, /nb_float/
47822 3ada46f2321d Revert 64424, 64438, and 64439. Raymond Hettinger <python@rcn.com> parents: 47791 diff changeset	1496 0, /* nb_oct */
3ada46f2321d Revert 64424, 64438, and 64439. Raymond Hettinger <python@rcn.com> parents: 47791 diff changeset	1497 0, /* nb_hex */
19051 f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1498 0, /* nb_inplace_add */
f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1499 0, /* nb_inplace_subtract */
f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1500 0, /* nb_inplace_multiply */
f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1501 0, /* nb_inplace_divide */
f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1502 0, /* nb_inplace_remainder */
f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1503 0, /* nb_inplace_power */
f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1504 0, /* nb_inplace_lshift */
f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1505 0, /* nb_inplace_rshift */
f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1506 0, /* nb_inplace_and */
f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1507 0, /* nb_inplace_xor */
f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1508 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	1509 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	1510 float_div, /* nb_true_divide */
f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1511 0, /* nb_inplace_floor_divide */
f20727cc3d0f Implement PEP 238 in its (almost) full glory. Guido van Rossum <guido@python.org> parents: 18933 diff changeset	1512 0, /* nb_inplace_true_divide */
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	1513 };
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	1514
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	1515 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	1516 PyVarObject_HEAD_INIT(&PyType_Type, 0)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	1517 "float",
5396 d1447950fa04 Quickly renamed the last directory. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	1518 sizeof(PyFloatObject),
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	1519 0,
18933 09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1520 (destructor)float_dealloc, /* tp_dealloc */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1521 (printfunc)float_print, /* tp_print */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1522 0, /* tp_getattr */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1523 0, /* tp_setattr */
32150 65f9ad9bc829 Remove float_compare as per Michael W. Hudson <mwh@python.net> parents: 31590 diff changeset	1524 0, /* tp_compare */
18933 09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1525 (reprfunc)float_repr, /* tp_repr */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1526 &float_as_number, /* tp_as_number */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1527 0, /* tp_as_sequence */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1528 0, /* tp_as_mapping */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1529 (hashfunc)float_hash, /* tp_hash */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1530 0, /* tp_call */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1531 (reprfunc)float_str, /* tp_str */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1532 PyObject_GenericGetAttr, /* tp_getattro */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1533 0, /* tp_setattro */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1534 0, /* tp_as_buffer */
19552 6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1535 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_CHECKTYPES \|
6c30d20d27f2 Make int, long and float subclassable. Guido van Rossum <guido@python.org> parents: 19457 diff changeset	1536 Py_TPFLAGS_BASETYPE, /* tp_flags */
18933 09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1537 float_doc, /* tp_doc */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1538 0, /* tp_traverse */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1539 0, /* tp_clear */
37304 79a0f080f898 Remove unnecessary casts in type object initializers. Georg Brandl <georg@python.org> parents: 36759 diff changeset	1540 float_richcompare, /* tp_richcompare */
18933 09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1541 0, /* tp_weaklistoffset */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1542 0, /* tp_iter */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1543 0, /* tp_iternext */
27521 17bfd5dbc0f1 Implement appropriate __getnewargs__ for all immutable subclassable builtin Guido van Rossum <guido@python.org> parents: 27484 diff changeset	1544 float_methods, /* tp_methods */
18933 09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1545 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	1546 float_getset, /* tp_getset */
18933 09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1547 0, /* tp_base */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1548 0, /* tp_dict */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1549 0, /* tp_descr_get */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1550 0, /* tp_descr_set */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1551 0, /* tp_dictoffset */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1552 0, /* tp_init */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1553 0, /* tp_alloc */
09df3254b49d Merge of descr-branch back into trunk. Tim Peters <tim.peters@gmail.com> parents: 18838 diff changeset	1554 float_new, /* tp_new */
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	1555 };
5936 80d24364b932 Added _Fini() routines to free up some memory Guido van Rossum <guido@python.org> parents: 5504 diff changeset	1556
80d24364b932 Added _Fini() routines to free up some memory Guido van Rossum <guido@python.org> parents: 5504 diff changeset	1557 void
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1558 _PyFloat_Init(void)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1559 {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1560 /* 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	1561 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	1562 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	1563 IEEE platform, the float packing/unpacking routines can
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1564 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	1565 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	1566 values, but what happens to infinities, NaNs and signed
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1567 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	1568 a NaN or an infinity will raise an exception.
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1569
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1570 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	1571 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	1572 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	1573 method. */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1574
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1575 #if SIZEOF_DOUBLE == 8
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1576 {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1577 double x = 9006104071832581.0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1578 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	1579 detected_double_format = ieee_big_endian_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1580 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	1581 detected_double_format = ieee_little_endian_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1582 else
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1583 detected_double_format = unknown_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1584 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1585 #else
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1586 detected_double_format = unknown_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1587 #endif
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1588
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1589 #if SIZEOF_FLOAT == 4
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1590 {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1591 float y = 16711938.0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1592 if (memcmp(&y, "\x4b\x7f\x01\x02", 4) == 0)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1593 detected_float_format = ieee_big_endian_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1594 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	1595 detected_float_format = ieee_little_endian_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1596 else
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1597 detected_float_format = unknown_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1598 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1599 #else
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1600 detected_float_format = unknown_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1601 #endif
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1602
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1603 double_format = detected_double_format;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1604 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	1605
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	1606 /* 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	1607 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	1608 PyStructSequence_InitType(&FloatInfoType, &floatinfo_desc);
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1609 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1610
47897 0738119c1ef8 - Issue #2862: Make int and float freelist management consistent with other Gregory P. Smith <greg@mad-scientist.com> parents: 47889 diff changeset	1611 int
0738119c1ef8 - Issue #2862: Make int and float freelist management consistent with other Gregory P. Smith <greg@mad-scientist.com> parents: 47889 diff changeset	1612 PyFloat_ClearFreeList(void)
5936 80d24364b932 Added _Fini() routines to free up some memory Guido van Rossum <guido@python.org> parents: 5504 diff changeset	1613 {
10391 7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	1614 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	1615 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	1616 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	1617 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	1618 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	1619
e2a08a81e56f OK, try again. Vladimir gave me a fix for the alignment bus error, Guido van Rossum <guido@python.org> parents: 10375 diff changeset	1620 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	1621 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	1622 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	1623 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	1624 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	1625 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	1626 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	1627 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	1628 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	1629 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	1630 }
10391 7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	1631 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	1632 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	1633 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	1634 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	1635 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	1636 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	1637 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	1638 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	1639 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	1640 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	1641 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	1642 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	1643 }
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	1644 }
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	1645 }
e2a08a81e56f OK, try again. Vladimir gave me a fix for the alignment bus error, Guido van Rossum <guido@python.org> parents: 10375 diff changeset	1646 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	1647 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	1648 }
47897 0738119c1ef8 - Issue #2862: Make int and float freelist management consistent with other Gregory P. Smith <greg@mad-scientist.com> parents: 47889 diff changeset	1649 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	1650 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	1651 }
47897 0738119c1ef8 - Issue #2862: Make int and float freelist management consistent with other Gregory P. Smith <greg@mad-scientist.com> parents: 47889 diff changeset	1652 return freelist_size;
45143 8fdd6d62ea55 Patch #1953 Christian Heimes <christian@cheimes.de> parents: 45101 diff changeset	1653 }
8fdd6d62ea55 Patch #1953 Christian Heimes <christian@cheimes.de> parents: 45101 diff changeset	1654
8fdd6d62ea55 Patch #1953 Christian Heimes <christian@cheimes.de> parents: 45101 diff changeset	1655 void
8fdd6d62ea55 Patch #1953 Christian Heimes <christian@cheimes.de> parents: 45101 diff changeset	1656 PyFloat_Fini(void)
8fdd6d62ea55 Patch #1953 Christian Heimes <christian@cheimes.de> parents: 45101 diff changeset	1657 {
8fdd6d62ea55 Patch #1953 Christian Heimes <christian@cheimes.de> parents: 45101 diff changeset	1658 PyFloatObject *p;
8fdd6d62ea55 Patch #1953 Christian Heimes <christian@cheimes.de> parents: 45101 diff changeset	1659 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	1660 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	1661 int u; /* total unfreed floats per block */
45143 8fdd6d62ea55 Patch #1953 Christian Heimes <christian@cheimes.de> parents: 45101 diff changeset	1662
47897 0738119c1ef8 - Issue #2862: Make int and float freelist management consistent with other Gregory P. Smith <greg@mad-scientist.com> parents: 47889 diff changeset	1663 u = PyFloat_ClearFreeList();
45143 8fdd6d62ea55 Patch #1953 Christian Heimes <christian@cheimes.de> parents: 45101 diff changeset	1664
10391 7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	1665 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	1666 return;
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	1667 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	1668 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	1669 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	1670 }
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	1671 else {
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	1672 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	1673 ": %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	1674 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	1675 }
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	1676 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	1677 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	1678 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	1679 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	1680 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	1681 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	1682 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	1683 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	1684 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	1685 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	1686 /* 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	1687 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	1688 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	1689 */
10391 7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	1690 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	1691 "# <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	1692 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	1693 }
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	1694 }
7b810aa35b5c Vladimir has restructured his code somewhat so that the blocks are now Guido van Rossum <guido@python.org> parents: 10382 diff changeset	1695 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	1696 }
e2a08a81e56f OK, try again. Vladimir gave me a fix for the alignment bus error, Guido van Rossum <guido@python.org> parents: 10375 diff changeset	1697 }
5936 80d24364b932 Added _Fini() routines to free up some memory Guido van Rossum <guido@python.org> parents: 5504 diff changeset	1698 }
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	1699
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	1700 /*----------------------------------------------------------------------------
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	1701 * _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	1702 */
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	1703 int
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	1704 _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	1705 {
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1706 if (float_format == unknown_format) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1707 unsigned char sign;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1708 int e;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1709 double f;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1710 unsigned int fbits;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1711 int incr = 1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1712
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1713 if (le) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1714 p += 3;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1715 incr = -1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1716 }
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	1717
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1718 if (x < 0) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1719 sign = 1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1720 x = -x;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1721 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1722 else
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1723 sign = 0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1724
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1725 f = frexp(x, &e);
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1726
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1727 /* 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	1728 if (0.5 <= f && f < 1.0) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1729 f *= 2.0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1730 e--;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1731 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1732 else if (f == 0.0)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1733 e = 0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1734 else {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1735 PyErr_SetString(PyExc_SystemError,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1736 "frexp() result out of range");
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1737 return -1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1738 }
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	1739
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1740 if (e >= 128)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1741 goto Overflow;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1742 else if (e < -126) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1743 /* Gradual underflow */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1744 f = ldexp(f, 126 + e);
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1745 e = 0;
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 else if (!(e == 0 && f == 0.0)) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1748 e += 127;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1749 f -= 1.0; /* Get rid of leading 1 */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1750 }
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	1751
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1752 f = 8388608.0; / 2*23 /
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1753 fbits = (unsigned int)(f + 0.5); /* Round */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1754 assert(fbits <= 8388608);
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1755 if (fbits >> 23) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1756 /* 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	1757 fbits = 0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1758 ++e;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1759 if (e >= 255)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1760 goto Overflow;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1761 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1762
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1763 /* First byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1764 *p = (sign << 7) \| (e >> 1);
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1765 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1766
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1767 /* Second byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1768 *p = (char) (((e & 1) << 7) \| (fbits >> 16));
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1769 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1770
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1771 /* Third byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1772 *p = (fbits >> 8) & 0xFF;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1773 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1774
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1775 /* Fourth byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1776 *p = fbits & 0xFF;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1777
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1778 /* Done */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1779 return 0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1780
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	1781 }
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1782 else {
35178 cf7a849ce61f Apparently some compiler gives a warning on Michael W. Hudson <mwh@python.net> parents: 34972 diff changeset	1783 float y = (float)x;
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1784 const char s = (char)&y;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1785 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	1786
45759 354e377c9590 Issue 705836: Fix struct.pack(">f", 1e40) to behave consistently Mark Dickinson <dickinsm@gmail.com> parents: 45381 diff changeset	1787 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	1788 goto Overflow;
354e377c9590 Issue 705836: Fix struct.pack(">f", 1e40) to behave consistently Mark Dickinson <dickinsm@gmail.com> parents: 45381 diff changeset	1789
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1790 if ((float_format == ieee_little_endian_format && !le)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1791 \|\| (float_format == ieee_big_endian_format && le)) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1792 p += 3;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1793 incr = -1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1794 }
45759 354e377c9590 Issue 705836: Fix struct.pack(">f", 1e40) to behave consistently Mark Dickinson <dickinsm@gmail.com> parents: 45381 diff changeset	1795
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1796 for (i = 0; i < 4; i++) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1797 p = s++;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1798 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1799 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1800 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	1801 }
45759 354e377c9590 Issue 705836: Fix struct.pack(">f", 1e40) to behave consistently Mark Dickinson <dickinsm@gmail.com> parents: 45381 diff changeset	1802 Overflow:
354e377c9590 Issue 705836: Fix struct.pack(">f", 1e40) to behave consistently Mark Dickinson <dickinsm@gmail.com> parents: 45381 diff changeset	1803 PyErr_SetString(PyExc_OverflowError,
354e377c9590 Issue 705836: Fix struct.pack(">f", 1e40) to behave consistently Mark Dickinson <dickinsm@gmail.com> parents: 45381 diff changeset	1804 "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	1805 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	1806 }
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	1807
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	1808 int
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	1809 _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	1810 {
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1811 if (double_format == unknown_format) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1812 unsigned char sign;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1813 int e;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1814 double f;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1815 unsigned int fhi, flo;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1816 int incr = 1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1817
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1818 if (le) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1819 p += 7;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1820 incr = -1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1821 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1822
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1823 if (x < 0) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1824 sign = 1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1825 x = -x;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1826 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1827 else
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1828 sign = 0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1829
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1830 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	1831
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1832 /* 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	1833 if (0.5 <= f && f < 1.0) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1834 f *= 2.0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1835 e--;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1836 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1837 else if (f == 0.0)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1838 e = 0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1839 else {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1840 PyErr_SetString(PyExc_SystemError,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1841 "frexp() result out of range");
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1842 return -1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1843 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1844
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1845 if (e >= 1024)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1846 goto Overflow;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1847 else if (e < -1022) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1848 /* Gradual underflow */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1849 f = ldexp(f, 1022 + e);
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1850 e = 0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1851 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1852 else if (!(e == 0 && f == 0.0)) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1853 e += 1023;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1854 f -= 1.0; /* Get rid of leading 1 */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1855 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1856
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1857 /* 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	1858 f = 268435456.0; / 2*28 /
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1859 fhi = (unsigned int)f; /* Truncate */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1860 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	1861
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1862 f -= (double)fhi;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1863 f = 16777216.0; / 2*24 /
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1864 flo = (unsigned int)(f + 0.5); /* Round */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1865 assert(flo <= 16777216);
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1866 if (flo >> 24) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1867 /* 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	1868 flo = 0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1869 ++fhi;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1870 if (fhi >> 28) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1871 /* 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	1872 fhi = 0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1873 ++e;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1874 if (e >= 2047)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1875 goto Overflow;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1876 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1877 }
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	1878
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1879 /* First byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1880 *p = (sign << 7) \| (e >> 4);
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1881 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1882
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1883 /* Second byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1884 *p = (unsigned char) (((e & 0xF) << 4) \| (fhi >> 24));
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1885 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	1886
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1887 /* Third byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1888 *p = (fhi >> 16) & 0xFF;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1889 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1890
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1891 /* Fourth byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1892 *p = (fhi >> 8) & 0xFF;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1893 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1894
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1895 /* Fifth byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1896 *p = fhi & 0xFF;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1897 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1898
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1899 /* Sixth byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1900 *p = (flo >> 16) & 0xFF;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1901 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1902
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1903 /* Seventh byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1904 *p = (flo >> 8) & 0xFF;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1905 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1906
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1907 /* Eighth byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1908 *p = flo & 0xFF;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1909 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1910
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1911 /* Done */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1912 return 0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1913
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1914 Overflow:
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1915 PyErr_SetString(PyExc_OverflowError,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1916 "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	1917 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	1918 }
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1919 else {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1920 const char s = (char)&x;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1921 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	1922
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1923 if ((double_format == ieee_little_endian_format && !le)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1924 \|\| (double_format == ieee_big_endian_format && le)) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1925 p += 7;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1926 incr = -1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1927 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1928
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1929 for (i = 0; i < 8; i++) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1930 p = s++;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1931 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1932 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1933 return 0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1934 }
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	1935 }
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	1936
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	1937 double
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	1938 _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	1939 {
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1940 if (float_format == unknown_format) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1941 unsigned char sign;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1942 int e;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1943 unsigned int f;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1944 double x;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1945 int incr = 1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1946
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1947 if (le) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1948 p += 3;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1949 incr = -1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1950 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1951
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1952 /* First byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1953 sign = (*p >> 7) & 1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1954 e = (*p & 0x7F) << 1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1955 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	1956
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1957 /* Second byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1958 e \|= (*p >> 7) & 1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1959 f = (*p & 0x7F) << 16;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1960 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	1961
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1962 if (e == 255) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1963 PyErr_SetString(
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1964 PyExc_ValueError,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1965 "can't unpack IEEE 754 special value "
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1966 "on non-IEEE platform");
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1967 return -1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1968 }
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	1969
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1970 /* Third byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1971 f \|= *p << 8;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1972 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	1973
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1974 /* Fourth byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1975 f \|= *p;
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 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	1978
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1979 /* XXX This sadly ignores Inf/NaN issues */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1980 if (e == 0)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1981 e = -126;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1982 else {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1983 x += 1.0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1984 e -= 127;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1985 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1986 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	1987
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1988 if (sign)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1989 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	1990
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1991 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	1992 }
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1993 else {
35987 8eda1a58a490 Fix bug Michael W. Hudson <mwh@python.net> parents: 35178 diff changeset	1994 float x;
8eda1a58a490 Fix bug Michael W. Hudson <mwh@python.net> parents: 35178 diff changeset	1995
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1996 if ((float_format == ieee_little_endian_format && !le)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1997 \|\| (float_format == ieee_big_endian_format && le)) {
35987 8eda1a58a490 Fix bug Michael W. Hudson <mwh@python.net> parents: 35178 diff changeset	1998 char buf[4];
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	1999 char *d = &buf[3];
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2000 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	2001
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2002 for (i = 0; i < 4; i++) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2003 d-- = p++;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2004 }
35987 8eda1a58a490 Fix bug Michael W. Hudson <mwh@python.net> parents: 35178 diff changeset	2005 memcpy(&x, buf, 4);
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2006 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2007 else {
35987 8eda1a58a490 Fix bug Michael W. Hudson <mwh@python.net> parents: 35178 diff changeset	2008 memcpy(&x, p, 4);
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2009 }
35987 8eda1a58a490 Fix bug Michael W. Hudson <mwh@python.net> parents: 35178 diff changeset	2010
8eda1a58a490 Fix bug Michael W. Hudson <mwh@python.net> parents: 35178 diff changeset	2011 return x;
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2012 }
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2013 }
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2014
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2015 double
70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2016 _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	2017 {
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2018 if (double_format == unknown_format) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2019 unsigned char sign;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2020 int e;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2021 unsigned int fhi, flo;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2022 double x;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2023 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	2024
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2025 if (le) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2026 p += 7;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2027 incr = -1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2028 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2029
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2030 /* First byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2031 sign = (*p >> 7) & 1;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2032 e = (*p & 0x7F) << 4;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2033
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2034 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	2035
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2036 /* Second byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2037 e \|= (*p >> 4) & 0xF;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2038 fhi = (*p & 0xF) << 24;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2039 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	2040
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2041 if (e == 2047) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2042 PyErr_SetString(
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2043 PyExc_ValueError,
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2044 "can't unpack IEEE 754 special value "
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2045 "on non-IEEE platform");
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2046 return -1.0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2047 }
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2048
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2049 /* Third byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2050 fhi \|= *p << 16;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2051 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	2052
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2053 /* Fourth byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2054 fhi \|= *p << 8;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2055 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2056
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2057 /* Fifth byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2058 fhi \|= *p;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2059 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	2060
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2061 /* Sixth byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2062 flo = *p << 16;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2063 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2064
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2065 /* Seventh byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2066 flo \|= *p << 8;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2067 p += incr;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2068
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2069 /* Eighth byte */
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2070 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	2071
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2072 x = (double)fhi + (double)flo / 16777216.0; /* 2*24 /
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2073 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	2074
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2075 if (e == 0)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2076 e = -1022;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2077 else {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2078 x += 1.0;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2079 e -= 1023;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2080 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2081 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	2082
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2083 if (sign)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2084 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	2085
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2086 return x;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2087 }
28335 70003b0cb837 New private API functions _PyFloat_{Pack,Unpack}(4,8}. This is a Tim Peters <tim.peters@gmail.com> parents: 27521 diff changeset	2088 else {
35987 8eda1a58a490 Fix bug Michael W. Hudson <mwh@python.net> parents: 35178 diff changeset	2089 double x;
8eda1a58a490 Fix bug Michael W. Hudson <mwh@python.net> parents: 35178 diff changeset	2090
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2091 if ((double_format == ieee_little_endian_format && !le)
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2092 \|\| (double_format == ieee_big_endian_format && le)) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2093 char buf[8];
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2094 char *d = &buf[7];
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2095 int i;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2096
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2097 for (i = 0; i < 8; i++) {
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2098 d-- = p++;
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2099 }
35987 8eda1a58a490 Fix bug Michael W. Hudson <mwh@python.net> parents: 35178 diff changeset	2100 memcpy(&x, buf, 8);
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2101 }
1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2102 else {
35987 8eda1a58a490 Fix bug Michael W. Hudson <mwh@python.net> parents: 35178 diff changeset	2103 memcpy(&x, p, 8);
34972 1dd8a0d64432 This is my patch: Michael W. Hudson <mwh@python.net> parents: 34931 diff changeset	2104 }
35987 8eda1a58a490 Fix bug Michael W. Hudson <mwh@python.net> parents: 35178 diff changeset	2105
8eda1a58a490 Fix bug Michael W. Hudson <mwh@python.net> parents: 35178 diff changeset	2106 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	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 }

Mercurial > cpython-lru_cache-weakref

annotate Objects/floatobject.c @ 47916:bed3dfd99281 legacy-trunk