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

   1 /* sf_signif.c -- float version of s_signif.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 #include "fdlibm.h"
  17
  18 #ifdef __STDC__
  19         float significandf(float x)
  20 #else
  21         float significandf(x)
  22         float x;
  23 #endif
  24 {
  25         return __ieee754_scalbf(x,(float) -ilogbf(x));
  26 }
  27
  28 #ifdef _DOUBLE_IS_32BITS
  29
  30 #ifdef __STDC__
  31         double significand(double x)
  32 #else
  33         double significand(x)
  34         double x;
  35 #endif
  36 {
  37         return (double) significandf((float) x);
  38 }
  39
  40 #endif /* defined(_DOUBLE_IS_32BITS) */