prime/src/Runtime/w_fmod.c

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/* @(#)w_fmod.c 1.2 95/01/04 */
/*
* ====================================================
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
*
* Developed at SunPro, a Sun Microsystems, Inc. business.
* Permission to use, copy, modify, and distribute this
* software is freely granted, provided that this notice
* is preserved.
* ====================================================
*/
/*
* wrapper fmod(x,y)
*/
#include "fdlibm.h"
#ifdef __STDC__
double fmod(double x, double y) /* wrapper fmod */
#else
double fmod(x, y) /* wrapper fmod */
double x, y;
#endif
{
#ifdef _IEEE_LIBM
return __ieee754_fmod(x, y);
#else
double z;
z = __ieee754_fmod(x, y);
if (_LIB_VERSION == _IEEE_ || isnan(y) || isnan(x))
return z;
if (y == 0.0) {
return __kernel_standard(x, y, 27); /* fmod(x,0) */
} else
return z;
#endif
}