1991-02-19 20:39:46 +08:00
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1990-10-14 20:07:46 +08:00
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/* Portable fmod(x, y) implementation for systems that don't have it */
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2001-07-26 21:41:06 +08:00
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#include "pyconfig.h"
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1995-02-27 18:15:10 +08:00
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2000-07-31 23:28:04 +08:00
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#include "pyport.h"
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1990-10-14 20:07:46 +08:00
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#include <errno.h>
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double
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1995-02-27 18:15:10 +08:00
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fmod(double x, double y)
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1990-10-14 20:07:46 +08:00
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{
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double i, f;
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if (y == 0.0) {
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errno = EDOM;
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return 0.0;
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}
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/* return f such that x = i*y + f for some integer i
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such that |f| < |y| and f has the same sign as x */
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i = floor(x/y);
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f = x - i*y;
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if ((x < 0.0) != (y < 0.0))
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f = f-y;
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return f;
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}
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