1 /*	$OpenBSD: s_cprojl.c,v 1.1 2011/07/08 19:25:31 martynas Exp $	*/
2 
3 /*
4  * Copyright (c) 2011 Martynas Venckus <martynas@openbsd.org>
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 #include <complex.h>
20 #include <math.h>
21 
22 long double complex
23 cprojl(long double complex z)
24 {
25 	long double complex res;
26 
27 	if (isinf(__real__ z) || isinf(__imag__ z)) {
28 		__real__ res = INFINITY;
29 		__imag__ res = copysignl(0.0, __imag__ z);
30 	} else {
31 		res = z;
32 	}
33 
34 	return res;
35 }
36