1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
24  */
25 /*
26  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
27  * Use is subject to license terms.
28  */
29 
30 #pragma weak __casinh = casinh
31 
32 /* INDENT OFF */
33 /*
34  * dcomplex casinh(dcomplex z);
35  * casinh z = -i casin iz .
36  */
37 /* INDENT ON */
38 
39 #include "libm.h"
40 #include "complex_wrapper.h"
41 
42 dcomplex
casinh(dcomplex z)43 casinh(dcomplex z) {
44 	dcomplex w, r, ans;
45 
46 	D_RE(w) = -D_IM(z);
47 	D_IM(w) = D_RE(z);
48 	r = casin(w);
49 	D_RE(ans) = D_IM(r);
50 	D_IM(ans) = -D_RE(r);
51 	return (ans);
52 }
53