xref: /illumos-gate/usr/src/lib/libmvec/common/__vz_log.c (revision 66582b606a8194f7f3ba5b3a3a6dca5b0d346361)
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 #ifdef __RESTRICT
31 #define restrict _Restrict
32 #else
33 #define restrict
34 #endif
35 
36 extern void __vatan2(int, double *, int, double *, int, double *, int);
37 extern void __vhypot(int, double *, int, double *, int, double *, int);
38 extern void __vlog(int, double *, int, double *, int);
39 
40 void
41 __vz_log(int n, double * restrict x, int stridex, double * restrict y,
42 	int stridey)
43 {
44 	stridex <<= 1;
45 	stridey <<= 1;
46 	__vhypot(n, x, stridex, x + 1, stridex, y + 1, stridey);
47 	__vlog(n, y + 1, stridey, y, stridey);
48 	__vatan2(n, x + 1, stridex, x, stridex, y + 1, stridey);
49 }
50