1/*	$OpenBSD: fabs.c,v 1.1 2021/06/19 18:43:28 deraadt Exp $	*/
2/*
3 * Copyright (c) 2008 Martynas Venckus <martynas@openbsd.org>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18#include <sys/types.h>
19#include <machine/ieee.h>
20#include <math.h>
21
22/*
23 * fabs(d) returns the absolute value of d.
24 */
25double
26fabs(double d)
27{
28	struct ieee_double *p = (struct ieee_double *)&d;
29
30	p->dbl_sign = 0;
31
32	return(d);
33}
34
35__strong_alias(fabsl, fabs);
36