compiler/mlib/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 #ifndef lint
  14 static char rcsid[] = "$FreeBSD: src/lib/msun/src/s_fabs.c,v 1.7 2002/05/28 18:15:04 alfred 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 }