xref: /titanic_51/usr/src/lib/libmvec/common/vlog_.c (revision 25c28e83beb90e7c80452a7c818c5e6f73a07dc8)
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 extern void __vlog(int, double *, int, double *, int);
31 
32 #if !defined(LIBMVEC_SO_BUILD)
33 #if defined(ARCH_v8plusa) || defined(ARCH_v8plusb) || defined(ARCH_v9a) || defined(ARCH_v9b)
34 #define CHECK_ULTRA3
35 #endif
36 #endif	/* !defined(LIBMVEC_SO_BUILD) */
37 
38 #ifdef CHECK_ULTRA3
39 #include <strings.h>
40 #define sysinfo _sysinfo
41 #include <sys/systeminfo.h>
42 
43 #define BUFLEN	257
44 
45 static int use_ultra3 = 0;
46 
47 extern void __vlog_ultra3(int, double *, int, double *, int);
48 #endif
49 
50 #pragma weak vlog_ = __vlog_
51 
52 /* just invoke the serial function */
53 void
54 __vlog_(int *n, double *x, int *stridex, double *y, int *stridey)
55 {
56 #ifdef CHECK_ULTRA3
57 	int		u;
58 	char	buf[BUFLEN];
59 
60 	u = use_ultra3;
61 	if (!u) {
62 		/* use __vlog_ultra3 on Cheetah (and ???) */
63 		if (sysinfo(SI_ISALIST, buf, BUFLEN) > 0 && !strncmp(buf, "sparcv9+vis2", 12))
64 			u = 3;
65 		else
66 			u = 1;
67 		use_ultra3 = u;
68 	}
69 	if (u & 2)
70 		__vlog_ultra3(*n, x, *stridex, y, *stridey);
71 	else
72 #endif
73 	__vlog(*n, x, *stridex, y, *stridey);
74 }
75