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

   1 /* sf_fabs.c -- float version of s_fabs.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  * fabsf(x) returns the absolute value of x.
  18  */
  19
  20 #include "fdlibm.h"
  21
  22 #ifdef __STDC__
  23         float fabsf(float x)
  24 #else
  25         float fabsf(x)
  26         float x;
  27 #endif
  28 {
  29         __uint32_t ix;
  30         GET_FLOAT_WORD(ix,x);
  31         SET_FLOAT_WORD(x,ix&0x7fffffff);
  32         return x;
  33 }
  34
  35 #ifdef _DOUBLE_IS_32BITS
  36
  37 #ifdef __STDC__
  38         double fabs(double x)
  39 #else
  40         double fabs(x)
  41         double x;
  42 #endif
  43 {
  44         return (double) fabsf((float) x);
  45 }
  46
  47 #endif /* defined(_DOUBLE_IS_32BITS) */