1 /* $OpenBSD: s_cproj.c,v 1.3 2011/07/08 19:25:31 martynas 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 /* LINTLIBRARY */ 19 20 #include <sys/cdefs.h> 21 #include <complex.h> 22 #include <float.h> 23 #include <math.h> 24 25 double complex 26 cproj(double complex z) 27 { 28 double complex res; 29 30 if (isinf(__real__ z) || isinf(__imag__ z)) { 31 __real__ res = INFINITY; 32 __imag__ res = copysign(0.0, __imag__ z); 33 } else { 34 res = z; 35 } 36 37 return res; 38 } 39 40 #if LDBL_MANT_DIG == 53 41 #ifdef lint 42 /* PROTOLIB1 */ 43 long double complex cprojl(long double complex); 44 #else /* lint */ 45 __weak_alias(cprojl, cproj); 46 #endif /* lint */ 47 #endif /* LDBL_MANT_DIG == 53 */ 48