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e_acos.c (141296) e_acos.c (176451)
1
2/* @(#)e_acos.c 1.3 95/01/18 */
3/*
4 * ====================================================
5 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
6 *
7 * Developed at SunSoft, 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
1
2/* @(#)e_acos.c 1.3 95/01/18 */
3/*
4 * ====================================================
5 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
6 *
7 * Developed at SunSoft, 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#ifndef lint
15static char rcsid[] = "$FreeBSD: head/lib/msun/src/e_acos.c 141296 2005-02-04 18:26:06Z das $";
16#endif
14#include <sys/cdefs.h>
15__FBSDID("$FreeBSD: head/lib/msun/src/e_acos.c 176451 2008-02-22 02:30:36Z das $");
17
18/* __ieee754_acos(x)
19 * Method :
20 * acos(x) = pi/2 - asin(x)
21 * acos(-x) = pi/2 + asin(x)
22 * For |x|<=0.5
23 * acos(x) = pi/2 - (x + x*x^2*R(x^2)) (see asin.c)
24 * For x>0.5

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17/* __ieee754_acos(x)
18 * Method :
19 * acos(x) = pi/2 - asin(x)
20 * acos(-x) = pi/2 + asin(x)
21 * For |x|<=0.5
22 * acos(x) = pi/2 - (x + x*x^2*R(x^2)) (see asin.c)
23 * For x>0.5

--- 80 unchanged lines hidden ---