toolchain/gcc/newlib/libm/math/wf_remainder.c

   1 /* wf_remainder.c -- float version of w_remainder.c.
   2  * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
   3  */
   4
   5 /*
   6  * ====================================================
   7  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
   8  *
   9  * Developed at SunPro, a Sun Microsystems, Inc. business.
  10  * Permission to use, copy, modify, and distribute this
  11  * software is freely granted, provided that this notice
  12  * is preserved.
  13  * ====================================================
  14  */
  15
  16 /*
  17  * wrapper remainderf(x,p)
  18  */
  19
  20 #include "fdlibm.h"
  21 #include <errno.h>
  22
  23 #ifdef __STDC__
  24         float remainderf(float x, float y)      /* wrapper remainder */
  25 #else
  26         float remainderf(x,y)                   /* wrapper remainder */
  27         float x,y;
  28 #endif
  29 {
  30 #ifdef _IEEE_LIBM
  31         return __ieee754_remainderf(x,y);
  32 #else
  33         float z;
  34         struct exception exc;
  35         z = __ieee754_remainderf(x,y);
  36         if(_LIB_VERSION == _IEEE_ || isnanf(y)) return z;
  37         if(y==(float)0.0) {
  38             /* remainderf(x,0) */
  39             exc.type = DOMAIN;
  40             exc.name = "remainderf";
  41             exc.err = 0;
  42             exc.arg1 = (double)x;
  43             exc.arg2 = (double)y;
  44             exc.retval = 0.0/0.0;
  45             if (_LIB_VERSION == _POSIX_)
  46                errno = EDOM;
  47             else if (!matherr(&exc)) {
  48                errno = EDOM;
  49             }
  50             if (exc.err != 0)
  51                errno = exc.err;
  52             return (float)exc.retval;
  53         } else
  54             return z;
  55 #endif
  56 }
  57
  58 #ifdef _DOUBLE_IS_32BITS
  59
  60 #ifdef __STDC__
  61         double remainder(double x, double y)
  62 #else
  63         double remainder(x,y)
  64         double x,y;
  65 #endif
  66 {
  67         return (double) remainderf((float) x, (float) y);
  68 }
  69
  70 #endif /* defined(_DOUBLE_IS_32BITS) */
  71
  72
  73
  74