xref: /illumos-gate/usr/src/lib/libm/common/R/sinhf.c (revision ad0b1ea5d69a45fe23c434277599e315f29a5fca)
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  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
23  */
24 /*
25  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
26  * Use is subject to license terms.
27  */
28 
29 #pragma weak __sinhf = sinhf
30 
31 #include "libm.h"
32 
33 float
34 sinhf(float x) {
35 	double	s;
36 	float	w;
37 	int	hx, ix;
38 
39 	hx = *(int *)&x;
40 	ix = hx & ~0x80000000;
41 	if (ix >= 0x7f800000) {
42 		/* sinhf(x) is x if x is +-Inf or NaN */
43 		return (x * 1.0f);
44 	}
45 	if (ix >= 0x43000000)	/* sinhf(x) trivially overflows */
46 		s = (hx < 0)? -1.0e100 : 1.0e100;
47 	else
48 		s = sinh((double)x);
49 	w = (float)s;
50 	return (w);
51 }
52