math/w_fmod.c

   1 /* @(#)w_fmod.c 5.1 93/09/24 */
   2 /*
   3  * ====================================================
   4  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
   5  *
   6  * Developed at SunPro, a Sun Microsystems, Inc. business.
   7  * Permission to use, copy, modify, and distribute this
   8  * software is freely granted, provided that this notice
   9  * is preserved.
  10  * ====================================================
  11  */
  12
  13 #if defined(LIBM_SCCS) && !defined(lint)
  14 static char rcsid[] = "$NetBSD: w_fmod.c,v 1.6 1995/05/10 20:48:55 jtc Exp $";
  15 #endif
  16
  17 /*
  18  * wrapper fmod(x,y)
  19  */
  20
  21 #include <math.h>
  22 #include "math_private.h"
  23
  24
  25 #ifdef __STDC__
  26         double __fmod(double x, double y)       /* wrapper fmod */
  27 #else
  28         double __fmod(x,y)              /* wrapper fmod */
  29         double x,y;
  30 #endif
  31 {
  32 #ifdef _IEEE_LIBM
  33         return __ieee754_fmod(x,y);
  34 #else
  35         double z;
  36         z = __ieee754_fmod(x,y);
  37         if(_LIB_VERSION == _IEEE_ ||__isnan(y)||__isnan(x)) return z;
  38         if(__isinf(x)||y==0.0) {
  39                 /* fmod(+-Inf,y) or fmod(x,0) */
  40                 return __kernel_standard(x,y,27);
  41         } else
  42             return z;
  43 #endif
  44 }
  45 weak_alias (__fmod, fmod)
  46 #ifdef NO_LONG_DOUBLE
  47 strong_alias (__fmod, __fmodl)
  48 weak_alias (__fmod, fmodl)
  49 #endif