Mercurial > cpython-lru_cache-weakref

annotate Python/fmod.c @ 41636:be1e708d5d3d 2.5

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Fix NonRecursiveMutex on x64. The signature of the faux-InterlockedCompareExchange function was wrong: It works with LONG and not PVOID objects, and it needs to have the target marked as volatile. Further, it is not needed at all for x64 targets, since that platform always has the real McCoy.
author Kristján Valur Jónsson <kristjan@ccpgames.com>
date Mon, 07 May 2007 18:28:12 +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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59f8cedcf049 merge Include/my*.h into Include/pyport.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 }