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annotate Python/fmod.c @ 40937:6aa1be5dd009

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Merged revisions 53912-53951 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r53919 | thomas.wouters | 2007-02-25 23:12:31 +0100 (Sun, 25 Feb 2007) | 8 lines Backported r51621 from p3yk: Don't use a fixed temporary name (gdbm). Don't use our own temp name creation (dbm). Should be backported to 2.5. ........ r53935 | georg.brandl | 2007-02-26 14:51:29 +0100 (Mon, 26 Feb 2007) | 2 lines Backport from Py3k branch: fix refleak in PyString_Format. ........ r53943 | jeremy.hylton | 2007-02-26 17:14:51 +0100 (Mon, 26 Feb 2007) | 2 lines Reformat long lines. ........ r53947 | neal.norwitz | 2007-02-26 18:01:08 +0100 (Mon, 26 Feb 2007) | 1 line Add Steven Bethard to help out with patches. ........ r53949 | georg.brandl | 2007-02-26 18:09:03 +0100 (Mon, 26 Feb 2007) | 3 lines Fix typo. ........ r53951 | neal.norwitz | 2007-02-26 19:10:47 +0100 (Mon, 26 Feb 2007) | 5 lines Fix a couple of problems in generating the AST code: * use %r instead of backticks since backticks are going away in Py3k * PyArena_Malloc() already sets PyErr_NoMemory so we don't need to do it again * the signature for ast2obj_int incorrectly used a bool, rather than a long ........
author Thomas Wouters <thomas@python.org>
date Mon, 26 Feb 2007 18:20:15 +0000
parents 2dea40e40d9d
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853b736a6a9e Added copyright notice.
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2 /* Portable fmod(x, y) implementation for systems that don't have it */
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2dea40e40d9d Patch #411138: Rename config.h to pyconfig.h. Closes bug #231774.
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4 #include "pyconfig.h"
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6 #include "pyport.h"
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7 #include <errno.h>
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9 double
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10 fmod(double x, double y)
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11 {
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12 double i, f;
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13
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14 if (y == 0.0) {
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15 errno = EDOM;
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16 return 0.0;
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17 }
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19 /* return f such that x = i*y + f for some integer i
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20 such that |f| < |y| and f has the same sign as x */
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22 i = floor(x/y);
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23 f = x - i*y;
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24 if ((x < 0.0) != (y < 0.0))
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25 f = f-y;
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26 return f;
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27 }