cpython-lru_cache-weakref: Modules/mathmodule.c annotate

annotate Modules/mathmodule.c @ 11518:cc412dfd79f7 legacy-trunk

New examples by Tony Ingraldi, using dns-lookup in stead of the funny interslip module.

author	Jack Jansen <jack.jansen@cwi.nl>
date	Fri, 03 Dec 1999 15:15:28 +0000
parents	5a36bad1d248
children	cc4350b1b91f

rev	line source
145 853b736a6a9e Added copyright notice. Guido van Rossum <guido@python.org> parents: 92 diff changeset	1 /***********************************************************
2061 172ba04a5191 Added 1995 to copyright message. Guido van Rossum <guido@python.org> parents: 2055 diff changeset	2 Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
172ba04a5191 Added 1995 to copyright message. Guido van Rossum <guido@python.org> parents: 2055 diff changeset	3 The Netherlands.
145 853b736a6a9e Added copyright notice. Guido van Rossum <guido@python.org> parents: 92 diff changeset	4
853b736a6a9e Added copyright notice. Guido van Rossum <guido@python.org> parents: 92 diff changeset	5 All Rights Reserved
853b736a6a9e Added copyright notice. Guido van Rossum <guido@python.org> parents: 92 diff changeset	6
4503 65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4178 diff changeset	7 Permission to use, copy, modify, and distribute this software and its
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4178 diff changeset	8 documentation for any purpose and without fee is hereby granted,
145 853b736a6a9e Added copyright notice. Guido van Rossum <guido@python.org> parents: 92 diff changeset	9 provided that the above copyright notice appear in all copies and that
4503 65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4178 diff changeset	10 both that copyright notice and this permission notice appear in
145 853b736a6a9e Added copyright notice. Guido van Rossum <guido@python.org> parents: 92 diff changeset	11 supporting documentation, and that the names of Stichting Mathematisch
4503 65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4178 diff changeset	12 Centrum or CWI or Corporation for National Research Initiatives or
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4178 diff changeset	13 CNRI not be used in advertising or publicity pertaining to
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4178 diff changeset	14 distribution of the software without specific, written prior
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4178 diff changeset	15 permission.
145 853b736a6a9e Added copyright notice. Guido van Rossum <guido@python.org> parents: 92 diff changeset	16
4503 65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4178 diff changeset	17 While CWI is the initial source for this software, a modified version
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4178 diff changeset	18 is made available by the Corporation for National Research Initiatives
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4178 diff changeset	19 (CNRI) at the Internet address ftp://ftp.python.org.
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4178 diff changeset	20
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4178 diff changeset	21 STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4178 diff changeset	22 REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4178 diff changeset	23 MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4178 diff changeset	24 CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4178 diff changeset	25 DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4178 diff changeset	26 PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4178 diff changeset	27 TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
65d2d8e67da3 New permission notice, includes CNRI. Guido van Rossum <guido@python.org> parents: 4178 diff changeset	28 PERFORMANCE OF THIS SOFTWARE.
145 853b736a6a9e Added copyright notice. Guido van Rossum <guido@python.org> parents: 92 diff changeset	29
853b736a6a9e Added copyright notice. Guido van Rossum <guido@python.org> parents: 92 diff changeset	30 ******************************************************************/
853b736a6a9e Added copyright notice. Guido van Rossum <guido@python.org> parents: 92 diff changeset	31
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	32 /* Math module -- standard C math library functions, pi and e */
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	33
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	34 #include "Python.h"
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	35
2455 b42ab77f2226 include mymath.h Guido van Rossum <guido@python.org> parents: 2213 diff changeset	36 #include "mymath.h"
86 a6934380c6e7 "Compiling" version Guido van Rossum <guido@python.org> parents: 75 diff changeset	37
3597 e07597389d64 Microsoft C changes Guido van Rossum <guido@python.org> parents: 3339 diff changeset	38 #ifndef _MSC_VER
2125 bd061dc30842 rearrange declarations somewhat Guido van Rossum <guido@python.org> parents: 2061 diff changeset	39 #ifndef __STDC__
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	40 extern double fmod Py_PROTO((double, double));
49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	41 extern double frexp Py_PROTO((double, int *));
49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	42 extern double ldexp Py_PROTO((double, int));
49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	43 extern double modf Py_PROTO((double, double *));
3597 e07597389d64 Microsoft C changes Guido van Rossum <guido@python.org> parents: 3339 diff changeset	44 #endif /* __STDC__ */
e07597389d64 Microsoft C changes Guido van Rossum <guido@python.org> parents: 3339 diff changeset	45 #endif /* _MSC_VER */
e07597389d64 Microsoft C changes Guido van Rossum <guido@python.org> parents: 3339 diff changeset	46
2125 bd061dc30842 rearrange declarations somewhat Guido van Rossum <guido@python.org> parents: 2061 diff changeset	47
1271 2919b448e385 * Microscopic corrections to make things compile on the Cray APP. Guido van Rossum <guido@python.org> parents: 1252 diff changeset	48 #ifdef i860
2919b448e385 * Microscopic corrections to make things compile on the Cray APP. Guido van Rossum <guido@python.org> parents: 1252 diff changeset	49 /* Cray APP has bogus definition of HUGE_VAL in <math.h> */
2919b448e385 * Microscopic corrections to make things compile on the Cray APP. Guido van Rossum <guido@python.org> parents: 1252 diff changeset	50 #undef HUGE_VAL
2919b448e385 * Microscopic corrections to make things compile on the Cray APP. Guido van Rossum <guido@python.org> parents: 1252 diff changeset	51 #endif
2919b448e385 * Microscopic corrections to make things compile on the Cray APP. Guido van Rossum <guido@python.org> parents: 1252 diff changeset	52
498 56bb1067a880 Improve error handling. Guido van Rossum <guido@python.org> parents: 438 diff changeset	53 #ifdef HUGE_VAL
56bb1067a880 Improve error handling. Guido van Rossum <guido@python.org> parents: 438 diff changeset	54 #define CHECK(x) if (errno != 0) ; \
56bb1067a880 Improve error handling. Guido van Rossum <guido@python.org> parents: 438 diff changeset	55 else if (-HUGE_VAL <= (x) && (x) <= HUGE_VAL) ; \
56bb1067a880 Improve error handling. Guido van Rossum <guido@python.org> parents: 438 diff changeset	56 else errno = ERANGE
56bb1067a880 Improve error handling. Guido van Rossum <guido@python.org> parents: 438 diff changeset	57 #else
56bb1067a880 Improve error handling. Guido van Rossum <guido@python.org> parents: 438 diff changeset	58 #define CHECK(x) /* Don't know how to check */
56bb1067a880 Improve error handling. Guido van Rossum <guido@python.org> parents: 438 diff changeset	59 #endif
56bb1067a880 Improve error handling. Guido van Rossum <guido@python.org> parents: 438 diff changeset	60
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	61 static PyObject *
498 56bb1067a880 Improve error handling. Guido van Rossum <guido@python.org> parents: 438 diff changeset	62 math_error()
56bb1067a880 Improve error handling. Guido van Rossum <guido@python.org> parents: 438 diff changeset	63 {
56bb1067a880 Improve error handling. Guido van Rossum <guido@python.org> parents: 438 diff changeset	64 if (errno == EDOM)
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	65 PyErr_SetString(PyExc_ValueError, "math domain error");
498 56bb1067a880 Improve error handling. Guido van Rossum <guido@python.org> parents: 438 diff changeset	66 else if (errno == ERANGE)
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	67 PyErr_SetString(PyExc_OverflowError, "math range error");
498 56bb1067a880 Improve error handling. Guido van Rossum <guido@python.org> parents: 438 diff changeset	68 else
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	69 /* Unexpected math error */
49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	70 PyErr_SetFromErrno(PyExc_ValueError);
498 56bb1067a880 Improve error handling. Guido van Rossum <guido@python.org> parents: 438 diff changeset	71 return NULL;
56bb1067a880 Improve error handling. Guido van Rossum <guido@python.org> parents: 438 diff changeset	72 }
56bb1067a880 Improve error handling. Guido van Rossum <guido@python.org> parents: 438 diff changeset	73
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	74 static PyObject *
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	75 math_1(args, func)
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	76 PyObject *args;
49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	77 double (*func) Py_FPROTO((double));
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	78 {
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	79 double x;
4780 abef5006f84b Removed references to getdoublearg and get2doublearg rename macros and Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4766 diff changeset	80 if (! PyArg_Parse(args, "d", &x))
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	81 return NULL;
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	82 errno = 0;
5120 a48f3678f9e1 Changes for Lee Busby's SIGFPE patch set. Guido van Rossum <guido@python.org> parents: 4780 diff changeset	83 PyFPE_START_PROTECT("in math_1", return 0)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	84 x = (*func)(x);
5197 74c12704a0bd New form of PyFPE_END_PROTECT macro. Guido van Rossum <guido@python.org> parents: 5120 diff changeset	85 PyFPE_END_PROTECT(x)
498 56bb1067a880 Improve error handling. Guido van Rossum <guido@python.org> parents: 438 diff changeset	86 CHECK(x);
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	87 if (errno != 0)
498 56bb1067a880 Improve error handling. Guido van Rossum <guido@python.org> parents: 438 diff changeset	88 return math_error();
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	89 else
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	90 return PyFloat_FromDouble(x);
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	91 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	92
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	93 static PyObject *
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	94 math_2(args, func)
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	95 PyObject *args;
49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	96 double (*func) Py_FPROTO((double, double));
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	97 {
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	98 double x, y;
4780 abef5006f84b Removed references to getdoublearg and get2doublearg rename macros and Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4766 diff changeset	99 if (! PyArg_Parse(args, "(dd)", &x, &y))
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	100 return NULL;
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	101 errno = 0;
5120 a48f3678f9e1 Changes for Lee Busby's SIGFPE patch set. Guido van Rossum <guido@python.org> parents: 4780 diff changeset	102 PyFPE_START_PROTECT("in math_2", return 0)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	103 x = (*func)(x, y);
5197 74c12704a0bd New form of PyFPE_END_PROTECT macro. Guido van Rossum <guido@python.org> parents: 5120 diff changeset	104 PyFPE_END_PROTECT(x)
498 56bb1067a880 Improve error handling. Guido van Rossum <guido@python.org> parents: 438 diff changeset	105 CHECK(x);
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	106 if (errno != 0)
498 56bb1067a880 Improve error handling. Guido van Rossum <guido@python.org> parents: 438 diff changeset	107 return math_error();
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	108 else
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	109 return PyFloat_FromDouble(x);
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	110 }
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	111
9593 f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	112 #define FUNC1(stubname, func, docstring_name, docstring) \
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	113 static PyObject * stubname(self, args) PyObject self, args; { \
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	114 return math_1(args, func); \
9593 f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	115 }\
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	116 static char docstring_name [] = docstring;
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	117
9593 f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	118 #define FUNC2(stubname, func, docstring_name, docstring) \
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	119 static PyObject * stubname(self, args) PyObject self, args; { \
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	120 return math_2(args, func); \
9593 f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	121 }\
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	122 static char docstring_name [] = docstring;
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	123
9593 f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	124 FUNC1(math_acos, acos, math_acos_doc,
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	125 "acos(x)\n\nReturn the arc cosine of x.")
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	126 FUNC1(math_asin, asin, math_asin_doc,
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	127 "asin(x)\n\nReturn the arc sine of x.")
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	128 FUNC1(math_atan, atan, math_atan_doc,
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	129 "atan(x)\n\nReturn the arc tangent of x.")
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	130 FUNC2(math_atan2, atan2, math_atan2_doc,
9608 5a36bad1d248 Correctly document atan2. Guido van Rossum <guido@python.org> parents: 9593 diff changeset	131 "atan2(y, x)\n\nReturn atan(y/x).")
9593 f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	132 FUNC1(math_ceil, ceil, math_ceil_doc,
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	133 "ceil(x)\n\nReturn the ceiling of x as a real.")
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	134 FUNC1(math_cos, cos, math_cos_doc,
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	135 "cos(x)\n\nReturn the cosine of x.")
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	136 FUNC1(math_cosh, cosh, math_cosh_doc,
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	137 "cosh(x)\n\nReturn the hyperbolic cosine of x.")
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	138 FUNC1(math_exp, exp, math_exp_doc,
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	139 "exp(x)\n\nReturn e raised to the power of x.")
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	140 FUNC1(math_fabs, fabs, math_fabs_doc,
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	141 "fabs(x)\n\nReturn the absolute value of the real x.")
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	142 FUNC1(math_floor, floor, math_floor_doc,
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	143 "floor(x)\n\nReturn the floor of x as a real.")
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	144 FUNC2(math_fmod, fmod, math_fmod_doc,
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	145 "fmod(x,y)\n\nReturn x % y.")
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	146 FUNC2(math_hypot, hypot, math_hypot_doc,
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	147 "hypot(x,y)\n\nReturn the Euclidean distance, sqrt(xx + yy).")
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	148 FUNC1(math_log, log, math_log_doc,
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	149 "log(x)\n\nReturn the natural logarithm of x.")
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	150 FUNC1(math_log10, log10, math_log10_doc,
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	151 "log10(x)\n\nReturn the base-10 logarithm of x.")
320 26426c42a162 Add some err_errno calls that were missing Guido van Rossum <guido@python.org> parents: 289 diff changeset	152 #ifdef MPW_3_1 /* This hack is needed for MPW 3.1 but not for 3.2 ... */
9593 f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	153 FUNC2(math_pow, power, math_pow_doc,
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	154 "power(x,y)\n\nReturn x**y.")
289 c4c278c56e90 Apparently MPW has power() instead of pow(). Guido van Rossum <guido@python.org> parents: 168 diff changeset	155 #else
9593 f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	156 FUNC2(math_pow, pow, math_pow_doc,
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	157 "pow(x,y)\n\nReturn x**y.")
289 c4c278c56e90 Apparently MPW has power() instead of pow(). Guido van Rossum <guido@python.org> parents: 168 diff changeset	158 #endif
9593 f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	159 FUNC1(math_sin, sin, math_sin_doc,
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	160 "sin(x)\n\nReturn the sine of x.")
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	161 FUNC1(math_sinh, sinh, math_sinh_doc,
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	162 "sinh(x)\n\nReturn the hyperbolic sine of x.")
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	163 FUNC1(math_sqrt, sqrt, math_sqrt_doc,
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	164 "sqrt(x)\n\nReturn the square root of x.")
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	165 FUNC1(math_tan, tan, math_tan_doc,
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	166 "tan(x)\n\nReturn the tangent of x.")
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	167 FUNC1(math_tanh, tanh, math_tanh_doc,
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	168 "tanh(x)\n\nReturn the hyperbolic tangent of x.")
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	169
1746 1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1319 diff changeset	170
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	171 static PyObject *
407 9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	172 math_frexp(self, args)
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	173 PyObject *self;
49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	174 PyObject *args;
407 9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	175 {
9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	176 double x;
9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	177 int i;
4780 abef5006f84b Removed references to getdoublearg and get2doublearg rename macros and Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4766 diff changeset	178 if (! PyArg_Parse(args, "d", &x))
407 9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	179 return NULL;
9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	180 errno = 0;
9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	181 x = frexp(x, &i);
498 56bb1067a880 Improve error handling. Guido van Rossum <guido@python.org> parents: 438 diff changeset	182 CHECK(x);
407 9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	183 if (errno != 0)
498 56bb1067a880 Improve error handling. Guido van Rossum <guido@python.org> parents: 438 diff changeset	184 return math_error();
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	185 return Py_BuildValue("(di)", x, i);
407 9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	186 }
9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	187
9593 f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	188 static char math_frexp_doc [] =
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	189 "frexp(x)\n\
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	190 \n\
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	191 Return the matissa and exponent for x. The mantissa is positive.";
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	192
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	193
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	194 static PyObject *
407 9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	195 math_ldexp(self, args)
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	196 PyObject *self;
49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	197 PyObject *args;
407 9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	198 {
9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	199 double x, y;
9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	200 /* Cheat -- allow float as second argument */
4780 abef5006f84b Removed references to getdoublearg and get2doublearg rename macros and Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4766 diff changeset	201 if (! PyArg_Parse(args, "(dd)", &x, &y))
407 9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	202 return NULL;
9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	203 errno = 0;
5120 a48f3678f9e1 Changes for Lee Busby's SIGFPE patch set. Guido van Rossum <guido@python.org> parents: 4780 diff changeset	204 PyFPE_START_PROTECT("ldexp", return 0)
407 9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	205 x = ldexp(x, (int)y);
5197 74c12704a0bd New form of PyFPE_END_PROTECT macro. Guido van Rossum <guido@python.org> parents: 5120 diff changeset	206 PyFPE_END_PROTECT(x)
498 56bb1067a880 Improve error handling. Guido van Rossum <guido@python.org> parents: 438 diff changeset	207 CHECK(x);
407 9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	208 if (errno != 0)
498 56bb1067a880 Improve error handling. Guido van Rossum <guido@python.org> parents: 438 diff changeset	209 return math_error();
407 9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	210 else
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	211 return PyFloat_FromDouble(x);
407 9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	212 }
9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	213
9593 f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	214 static char math_ldexp_doc [] =
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	215 "ldexp_doc(x, i)\n\
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	216 \n\
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	217 Return x * (2**i).";
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	218
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	219
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	220 static PyObject *
407 9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	221 math_modf(self, args)
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	222 PyObject *self;
49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	223 PyObject *args;
407 9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	224 {
9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	225 double x, y;
4780 abef5006f84b Removed references to getdoublearg and get2doublearg rename macros and Roger E. Masse <rmasse@newcnri.cnri.reston.va.us> parents: 4766 diff changeset	226 if (! PyArg_Parse(args, "d", &x))
407 9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	227 return NULL;
9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	228 errno = 0;
1746 1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1319 diff changeset	229 #ifdef MPW /* MPW C modf expects pointer to extended as second argument */
1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1319 diff changeset	230 {
1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1319 diff changeset	231 extended e;
1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1319 diff changeset	232 x = modf(x, &e);
1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1319 diff changeset	233 y = e;
1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1319 diff changeset	234 }
1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1319 diff changeset	235 #else
407 9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	236 x = modf(x, &y);
1746 1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1319 diff changeset	237 #endif
498 56bb1067a880 Improve error handling. Guido van Rossum <guido@python.org> parents: 438 diff changeset	238 CHECK(x);
407 9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	239 if (errno != 0)
498 56bb1067a880 Improve error handling. Guido van Rossum <guido@python.org> parents: 438 diff changeset	240 return math_error();
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	241 return Py_BuildValue("(dd)", x, y);
407 9b3d557665a9 Added frexp, ldexp, modf, fmod. Guido van Rossum <guido@python.org> parents: 320 diff changeset	242 }
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	243
9593 f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	244 static char math_modf_doc [] =
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	245 "modf(x)\n\
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	246 \n\
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	247 Return the fractional and integer parts of x. Both results carry the sign\n\
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	248 of x. The integer part is returned as a real.";
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	249
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	250
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	251 static PyMethodDef math_methods[] = {
9593 f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	252 {"acos", math_acos, 0, math_acos_doc},
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	253 {"asin", math_asin, 0, math_asin_doc},
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	254 {"atan", math_atan, 0, math_atan_doc},
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	255 {"atan2", math_atan2, 0, math_atan2_doc},
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	256 {"ceil", math_ceil, 0, math_ceil_doc},
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	257 {"cos", math_cos, 0, math_cos_doc},
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	258 {"cosh", math_cosh, 0, math_cosh_doc},
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	259 {"exp", math_exp, 0, math_exp_doc},
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	260 {"fabs", math_fabs, 0, math_fabs_doc},
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	261 {"floor", math_floor, 0, math_floor_doc},
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	262 {"fmod", math_fmod, 0, math_fmod_doc},
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	263 {"frexp", math_frexp, 0, math_frexp_doc},
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	264 {"hypot", math_hypot, 0, math_hypot_doc},
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	265 {"ldexp", math_ldexp, 0, math_ldexp_doc},
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	266 {"log", math_log, 0, math_log_doc},
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	267 {"log10", math_log10, 0, math_log10_doc},
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	268 {"modf", math_modf, 0, math_modf_doc},
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	269 {"pow", math_pow, 0, math_pow_doc},
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	270 {"sin", math_sin, 0, math_sin_doc},
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	271 {"sinh", math_sinh, 0, math_sinh_doc},
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	272 {"sqrt", math_sqrt, 0, math_sqrt_doc},
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	273 {"tan", math_tan, 0, math_tan_doc},
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	274 {"tanh", math_tanh, 0, math_tanh_doc},
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	275 {NULL, NULL} /* sentinel */
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	276 };
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	277
9593 f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	278
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	279 static char module_doc [] =
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	280 "This module is always available. It provides access to the\n\
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	281 mathematical functions defined by the C standard.";
f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	282
9588 38023a425e48 Add DL_EXPORT() to all modules that could possibly be used Guido van Rossum <guido@python.org> parents: 5554 diff changeset	283 DL_EXPORT(void)
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	284 initmath()
fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	285 {
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	286 PyObject m, d, *v;
42 4835c2d38b84 Take out duplication of code in initmodule(). Guido van Rossum <guido@python.org> parents: 6 diff changeset	287
9593 f22f769bf3d9 Added Doc strings -- by Chris Petrilli. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	288 m = Py_InitModule3("math", math_methods, module_doc);
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	289 d = PyModule_GetDict(m);
4752 7367fb107108 Better error checking in initmath(). Barry Warsaw <barry@python.org> parents: 4635 diff changeset	290
7367fb107108 Better error checking in initmath(). Barry Warsaw <barry@python.org> parents: 4635 diff changeset	291 if (!(v = PyFloat_FromDouble(atan(1.0) * 4.0)))
7367fb107108 Better error checking in initmath(). Barry Warsaw <barry@python.org> parents: 4635 diff changeset	292 goto finally;
7367fb107108 Better error checking in initmath(). Barry Warsaw <barry@python.org> parents: 4635 diff changeset	293 if (PyDict_SetItemString(d, "pi", v) < 0)
7367fb107108 Better error checking in initmath(). Barry Warsaw <barry@python.org> parents: 4635 diff changeset	294 goto finally;
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	295 Py_DECREF(v);
4752 7367fb107108 Better error checking in initmath(). Barry Warsaw <barry@python.org> parents: 4635 diff changeset	296
7367fb107108 Better error checking in initmath(). Barry Warsaw <barry@python.org> parents: 4635 diff changeset	297 if (!(v = PyFloat_FromDouble(exp(1.0))))
7367fb107108 Better error checking in initmath(). Barry Warsaw <barry@python.org> parents: 4635 diff changeset	298 goto finally;
4765 f8b36c0ec114 Correct 1-char typo / syntax error. Guido van Rossum <guido@python.org> parents: 4752 diff changeset	299 if (PyDict_SetItemString(d, "e", v) < 0)
4752 7367fb107108 Better error checking in initmath(). Barry Warsaw <barry@python.org> parents: 4635 diff changeset	300 goto finally;
4635 49745ddb4f69 Renamed Barry Warsaw <barry@python.org> parents: 4503 diff changeset	301 Py_DECREF(v);
4766 9604d6784675 Correct another mistake (initmath() always fell through to fatal error). Guido van Rossum <guido@python.org> parents: 4765 diff changeset	302 return;
4752 7367fb107108 Better error checking in initmath(). Barry Warsaw <barry@python.org> parents: 4635 diff changeset	303
7367fb107108 Better error checking in initmath(). Barry Warsaw <barry@python.org> parents: 4635 diff changeset	304 finally:
7367fb107108 Better error checking in initmath(). Barry Warsaw <barry@python.org> parents: 4635 diff changeset	305 Py_FatalError("can't initialize math module");
6 fc6fcd7df4f7 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	306 }

Mercurial > cpython-lru_cache-weakref

annotate Modules/mathmodule.c @ 11518:cc412dfd79f7 legacy-trunk