src/libm/s_fabs.c
author Sam Lantinga <slouken@libsdl.org>
Mon, 15 Sep 2008 06:33:23 +0000
changeset 2756 a98604b691c8
child 3162 dc1eb82ffdaa
permissions -rw-r--r--
Expanded the libm support and put it into a separate directory.
     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 libm_hidden_proto(fabs)
    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 
    38 libm_hidden_def(fabs)