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annotate src/libm/s_fabs.c @ 2993:2fad80c77c17

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Technically more correct
author Sam Lantinga <slouken@libsdl.org>
date Sun, 04 Jan 2009 19:26:50 +0000
parents a98604b691c8
children dc1eb82ffdaa
rev   line source
2756
a98604b691c8 Expanded the libm support and put it into a separate directory.
Sam Lantinga <slouken@libsdl.org>
parents:
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1 /* @(#)s_fabs.c 5.1 93/09/24 */
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2 /*
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3 * ====================================================
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4 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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5 *
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6 * Developed at SunPro, a Sun Microsystems, Inc. business.
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7 * Permission to use, copy, modify, and distribute this
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8 * software is freely granted, provided that this notice
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9 * is preserved.
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10 * ====================================================
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11 */
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12
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13 #if defined(LIBM_SCCS) && !defined(lint)
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14 static char rcsid[] = "$NetBSD: s_fabs.c,v 1.7 1995/05/10 20:47:13 jtc Exp $";
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15 #endif
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16
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17 /*
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18 * fabs(x) returns the absolute value of x.
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19 */
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20
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21 #include "math.h"
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22 #include "math_private.h"
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23
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24 libm_hidden_proto(fabs)
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25 #ifdef __STDC__
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26 double fabs(double x)
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27 #else
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28 double fabs(x)
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29 double x;
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30 #endif
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31 {
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32 u_int32_t high;
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33 GET_HIGH_WORD(high, x);
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34 SET_HIGH_WORD(x, high & 0x7fffffff);
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35 return x;
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36 }
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37
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38 libm_hidden_def(fabs)