sysdeps/ieee754/dbl-64/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 double
  25 __fabs (double x)
  26 {
  27   u_int32_t high;
  28   GET_HIGH_WORD (high, x);
  29   SET_HIGH_WORD (x, high & 0x7fffffff);
  30   return x;
  31 }
  32 weak_alias (__fabs, fabs)
  33 #ifdef NO_LONG_DOUBLE
  34 strong_alias (__fabs, __fabsl)
  35 weak_alias (__fabs, fabsl)
  36 #endif