1*25c28e83SPiotr Jasiukajtis /* 2*25c28e83SPiotr Jasiukajtis * CDDL HEADER START 3*25c28e83SPiotr Jasiukajtis * 4*25c28e83SPiotr Jasiukajtis * The contents of this file are subject to the terms of the 5*25c28e83SPiotr Jasiukajtis * Common Development and Distribution License (the "License"). 6*25c28e83SPiotr Jasiukajtis * You may not use this file except in compliance with the License. 7*25c28e83SPiotr Jasiukajtis * 8*25c28e83SPiotr Jasiukajtis * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9*25c28e83SPiotr Jasiukajtis * or http://www.opensolaris.org/os/licensing. 10*25c28e83SPiotr Jasiukajtis * See the License for the specific language governing permissions 11*25c28e83SPiotr Jasiukajtis * and limitations under the License. 12*25c28e83SPiotr Jasiukajtis * 13*25c28e83SPiotr Jasiukajtis * When distributing Covered Code, include this CDDL HEADER in each 14*25c28e83SPiotr Jasiukajtis * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15*25c28e83SPiotr Jasiukajtis * If applicable, add the following below this CDDL HEADER, with the 16*25c28e83SPiotr Jasiukajtis * fields enclosed by brackets "[]" replaced with your own identifying 17*25c28e83SPiotr Jasiukajtis * information: Portions Copyright [yyyy] [name of copyright owner] 18*25c28e83SPiotr Jasiukajtis * 19*25c28e83SPiotr Jasiukajtis * CDDL HEADER END 20*25c28e83SPiotr Jasiukajtis */ 21*25c28e83SPiotr Jasiukajtis 22*25c28e83SPiotr Jasiukajtis /* 23*25c28e83SPiotr Jasiukajtis * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 24*25c28e83SPiotr Jasiukajtis */ 25*25c28e83SPiotr Jasiukajtis /* 26*25c28e83SPiotr Jasiukajtis * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 27*25c28e83SPiotr Jasiukajtis * Use is subject to license terms. 28*25c28e83SPiotr Jasiukajtis */ 29*25c28e83SPiotr Jasiukajtis 30*25c28e83SPiotr Jasiukajtis #pragma weak cacoshl = __cacoshl 31*25c28e83SPiotr Jasiukajtis 32*25c28e83SPiotr Jasiukajtis #include "libm.h" /* fabsl/isnanl/isinfl/signbitl */ 33*25c28e83SPiotr Jasiukajtis #include "complex_wrapper.h" 34*25c28e83SPiotr Jasiukajtis #include "longdouble.h" 35*25c28e83SPiotr Jasiukajtis 36*25c28e83SPiotr Jasiukajtis /* INDENT OFF */ 37*25c28e83SPiotr Jasiukajtis /* 38*25c28e83SPiotr Jasiukajtis * ldcomplex cacoshl(ldcomplex z); 39*25c28e83SPiotr Jasiukajtis * cacosh z = +-i cacos z . 40*25c28e83SPiotr Jasiukajtis * In order to make conj(cacosh(z))=cacosh(conj(z)), 41*25c28e83SPiotr Jasiukajtis * we define 42*25c28e83SPiotr Jasiukajtis * cacosh z = sign(Im(z))*i cacos z . 43*25c28e83SPiotr Jasiukajtis * 44*25c28e83SPiotr Jasiukajtis */ 45*25c28e83SPiotr Jasiukajtis /* INDENT ON */ 46*25c28e83SPiotr Jasiukajtis 47*25c28e83SPiotr Jasiukajtis ldcomplex 48*25c28e83SPiotr Jasiukajtis cacoshl(ldcomplex z) { 49*25c28e83SPiotr Jasiukajtis ldcomplex w, ans; 50*25c28e83SPiotr Jasiukajtis long double x, y; 51*25c28e83SPiotr Jasiukajtis 52*25c28e83SPiotr Jasiukajtis w = cacosl(z); 53*25c28e83SPiotr Jasiukajtis x = LD_RE(z); 54*25c28e83SPiotr Jasiukajtis y = LD_IM(z); 55*25c28e83SPiotr Jasiukajtis if (isnanl(y)) { 56*25c28e83SPiotr Jasiukajtis LD_IM(ans) = y + y; 57*25c28e83SPiotr Jasiukajtis if (isinfl(x)) 58*25c28e83SPiotr Jasiukajtis LD_RE(ans) = fabsl(x); 59*25c28e83SPiotr Jasiukajtis else 60*25c28e83SPiotr Jasiukajtis LD_RE(ans) = y; 61*25c28e83SPiotr Jasiukajtis } else if (signbitl(y) == 0) { 62*25c28e83SPiotr Jasiukajtis LD_RE(ans) = -LD_IM(w); 63*25c28e83SPiotr Jasiukajtis LD_IM(ans) = LD_RE(w); 64*25c28e83SPiotr Jasiukajtis } else { 65*25c28e83SPiotr Jasiukajtis LD_RE(ans) = LD_IM(w); 66*25c28e83SPiotr Jasiukajtis LD_IM(ans) = -LD_RE(w); 67*25c28e83SPiotr Jasiukajtis } 68*25c28e83SPiotr Jasiukajtis return (ans); 69*25c28e83SPiotr Jasiukajtis } 70