1*05a0b428SJohn Marino /* $OpenBSD: s_cproj.c,v 1.7 2013/07/03 04:46:36 espie Exp $ */
2*05a0b428SJohn Marino /*
3*05a0b428SJohn Marino * Copyright (c) 2008 Martynas Venckus <martynas@openbsd.org>
4*05a0b428SJohn Marino *
5*05a0b428SJohn Marino * Permission to use, copy, modify, and distribute this software for any
6*05a0b428SJohn Marino * purpose with or without fee is hereby granted, provided that the above
7*05a0b428SJohn Marino * copyright notice and this permission notice appear in all copies.
8*05a0b428SJohn Marino *
9*05a0b428SJohn Marino * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10*05a0b428SJohn Marino * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11*05a0b428SJohn Marino * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12*05a0b428SJohn Marino * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13*05a0b428SJohn Marino * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14*05a0b428SJohn Marino * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15*05a0b428SJohn Marino * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16*05a0b428SJohn Marino */
17*05a0b428SJohn Marino
18*05a0b428SJohn Marino #include <complex.h>
19*05a0b428SJohn Marino #include <float.h>
20*05a0b428SJohn Marino #include <math.h>
21*05a0b428SJohn Marino
22*05a0b428SJohn Marino double complex
cproj(double complex z)23*05a0b428SJohn Marino cproj(double complex z)
24*05a0b428SJohn Marino {
25*05a0b428SJohn Marino double complex res;
26*05a0b428SJohn Marino
27*05a0b428SJohn Marino if (isinf(__real__ z) || isinf(__imag__ z)) {
28*05a0b428SJohn Marino __real__ res = INFINITY;
29*05a0b428SJohn Marino __imag__ res = copysign(0.0, __imag__ z);
30*05a0b428SJohn Marino } else {
31*05a0b428SJohn Marino res = z;
32*05a0b428SJohn Marino }
33*05a0b428SJohn Marino
34*05a0b428SJohn Marino return res;
35*05a0b428SJohn Marino }
36*05a0b428SJohn Marino
37*05a0b428SJohn Marino #if LDBL_MANT_DIG == DBL_MANT_DIG
38*05a0b428SJohn Marino __strong_alias(cprojl, cproj);
39*05a0b428SJohn Marino #endif /* LDBL_MANT_DIG == DBL_MANT_DIG */
40