sysdeps/libm-ieee754/s_fabs.c

   1 /* @(#)s_fabs.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: s_fabs.c,v 1.7 1995/05/10 20:47:13 jtc Exp $";
  15 #endif
  16
  17 /*
  18  * fabs(x) returns the absolute value of x.
  19  */
  20
  21 #include "math.h"
  22 #include "math_private.h"
  23
  24 #ifdef __STDC__
  25         double __fabs(double x)
  26 #else
  27         double __fabs(x)
  28         double x;
  29 #endif
  30 {
  31         u_int32_t high;
  32         GET_HIGH_WORD(high,x);
  33         SET_HIGH_WORD(x,high&0x7fffffff);
  34         return x;
  35 }
  36 weak_alias (__fabs, fabs)
  37 #ifdef NO_LONG_DOUBLE
  38 strong_alias (__fabs, __fabsl)
  39 weak_alias (__fabs, fabsl)
  40 #endif