GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libm/src/s_cacosl.c Lines: 0 2 0.0 %
Date: 2017-11-07 Branches: 0 0 0.0 %

Line Branch Exec Source
1
/*	$OpenBSD: s_cacosl.c,v 1.3 2011/07/20 21:02:51 martynas Exp $	*/
2
3
/*
4
 * Copyright (c) 2008 Stephen L. Moshier <steve@moshier.net>
5
 *
6
 * Permission to use, copy, modify, and distribute this software for any
7
 * purpose with or without fee is hereby granted, provided that the above
8
 * copyright notice and this permission notice appear in all copies.
9
 *
10
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17
 */
18
19
/*							cacosl()
20
 *
21
 *	Complex circular arc cosine
22
 *
23
 *
24
 *
25
 * SYNOPSIS:
26
 *
27
 * long double complex cacosl();
28
 * long double complex z, w;
29
 *
30
 * w = cacosl( z );
31
 *
32
 *
33
 *
34
 * DESCRIPTION:
35
 *
36
 *
37
 * w = arccos z  =  PI/2 - arcsin z.
38
 *
39
 *
40
 *
41
 *
42
 * ACCURACY:
43
 *
44
 *                      Relative error:
45
 * arithmetic   domain     # trials      peak         rms
46
 *    DEC       -10,+10      5200      1.6e-15      2.8e-16
47
 *    IEEE      -10,+10     30000      1.8e-14      2.2e-15
48
 */
49
50
#include <complex.h>
51
#include <math.h>
52
53
static const long double PIO2L = 1.570796326794896619231321691639751442098585L;
54
55
long double complex
56
cacosl(long double complex z)
57
{
58
	long double complex w;
59
60
	w = casinl(z);
61
	w = (PIO2L - creall(w)) - cimagl(w) * I;
62
	return (w);
63
}