Mercurial > cpython-lru_cache-weakref

annotate Python/fmod.c @ 13930:4eaa463c031a legacy-trunk

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Merge UNPACK_LIST and UNPACK_TUPLE into a single UNPACK_SEQUENCE, since they did the same anyway. I'm not sure what to do with Tools/compiler/compiler/* -- that isn't part of distutils, is it ? Should it try to be compatible with old bytecode version ?
author Thomas Wouters <thomas@python.org>
date Fri, 11 Aug 2000 22:15:52 +0000
parents 59f8cedcf049
children 6f6f965c5e2d
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1 /***********************************************************
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2 Copyright (c) 2000, BeOpen.com.
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3 Copyright (c) 1995-2000, Corporation for National Research Initiatives.
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4 Copyright (c) 1990-1995, Stichting Mathematisch Centrum.
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5 All rights reserved.
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6
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7 See the file "Misc/COPYRIGHT" for information on usage and
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8 redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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9 ******************************************************************/
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10
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11 /* Portable fmod(x, y) implementation for systems that don't have it */
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12
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13 #include "config.h"
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15 #include "pyport.h"
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16 #include <errno.h>
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17
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18 double
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19 fmod(double x, double y)
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20 {
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21 double i, f;
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22
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23 if (y == 0.0) {
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24 errno = EDOM;
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25 return 0.0;
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26 }
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27
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28 /* return f such that x = i*y + f for some integer i
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29 such that |f| < |y| and f has the same sign as x */
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31 i = floor(x/y);
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32 f = x - i*y;
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33 if ((x < 0.0) != (y < 0.0))
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34 f = f-y;
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35 return f;
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36 }