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  1. /* Copyright (C) 1994 DJ Delorie, see COPYING.DJ for details */
  2. /* @(#)s_fabs.c 5.1 93/09/24 */
  3. /*
  4.  * ====================================================
  5.  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
  6.  *
  7.  * Developed at SunPro, a Sun Microsystems, Inc. business.
  8.  * Permission to use, copy, modify, and distribute this
  9.  * software is freely granted, provided that this notice
  10.  * is preserved.
  11.  * ====================================================
  12.  */
  13.  
  14. #if defined(LIBM_SCCS) && !defined(lint)
  15. static char rcsid[] = "$Id: s_fabs.c,v 1.5 1994/08/18 23:06:42 jtc Exp $";
  16. #endif
  17.  
  18. /*
  19.  * fabs(x) returns the absolute value of x.
  20.  */
  21.  
  22. #include "math.h"
  23. #include "math_private.h"
  24.  
  25. #ifdef __STDC__
  26.         double fabs(double x)
  27. #else
  28.         double fabs(x)
  29.         double x;
  30. #endif
  31. {
  32.         u_int32_t high;
  33.         GET_HIGH_WORD(high,x);
  34.         SET_HIGH_WORD(x,high&0x7fffffff);
  35.         return x;
  36. }
  37.