xref: /illumos-gate/usr/src/stand/lib/sa/strings.c (revision 7c478bd9)
1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate  * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate  *
4*7c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate  * with the License.
8*7c478bd9Sstevel@tonic-gate  *
9*7c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate  * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate  *
14*7c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate  *
20*7c478bd9Sstevel@tonic-gate  * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate  */
22*7c478bd9Sstevel@tonic-gate /*
23*7c478bd9Sstevel@tonic-gate  * Copyright 1998, 2003 Sun Microsystems, Inc.  All rights reserved.
24*7c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
25*7c478bd9Sstevel@tonic-gate  */
26*7c478bd9Sstevel@tonic-gate 
27*7c478bd9Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"	/* from SVR4.0 1.1 */
28*7c478bd9Sstevel@tonic-gate 
29*7c478bd9Sstevel@tonic-gate #include <stdio.h>
30*7c478bd9Sstevel@tonic-gate #include <strings.h>
31*7c478bd9Sstevel@tonic-gate 
32*7c478bd9Sstevel@tonic-gate /*
33*7c478bd9Sstevel@tonic-gate  * NOTE: strcasecmp()/strncasecmp() are in $SRC/common/util/string.c.
34*7c478bd9Sstevel@tonic-gate  */
35*7c478bd9Sstevel@tonic-gate 
36*7c478bd9Sstevel@tonic-gate int
bcmp(const void * s1,const void * s2,size_t len)37*7c478bd9Sstevel@tonic-gate bcmp(const void *s1, const void *s2, size_t len)
38*7c478bd9Sstevel@tonic-gate {
39*7c478bd9Sstevel@tonic-gate 	return (memcmp(s1, s2, len) != 0);
40*7c478bd9Sstevel@tonic-gate }
41*7c478bd9Sstevel@tonic-gate 
42*7c478bd9Sstevel@tonic-gate /*
43*7c478bd9Sstevel@tonic-gate  * NOTE: our memmove() implementation depends on the fact that this bcopy()
44*7c478bd9Sstevel@tonic-gate  * supports overlapping regions.
45*7c478bd9Sstevel@tonic-gate  */
46*7c478bd9Sstevel@tonic-gate void
bcopy(const void * src,void * dest,size_t count)47*7c478bd9Sstevel@tonic-gate bcopy(const void *src, void *dest, size_t count)
48*7c478bd9Sstevel@tonic-gate {
49*7c478bd9Sstevel@tonic-gate 	const char	*csrc	= src;
50*7c478bd9Sstevel@tonic-gate 	char		*cdest	= dest;
51*7c478bd9Sstevel@tonic-gate 
52*7c478bd9Sstevel@tonic-gate 	if (count == 0)
53*7c478bd9Sstevel@tonic-gate 		return;
54*7c478bd9Sstevel@tonic-gate 
55*7c478bd9Sstevel@tonic-gate 	if (csrc < cdest && (csrc + count) > cdest) {
56*7c478bd9Sstevel@tonic-gate 		/* overlap copy */
57*7c478bd9Sstevel@tonic-gate 		while (count != 0)
58*7c478bd9Sstevel@tonic-gate 			--count, *(cdest + count) = *(csrc + count);
59*7c478bd9Sstevel@tonic-gate 	} else {
60*7c478bd9Sstevel@tonic-gate 		while (count != 0)
61*7c478bd9Sstevel@tonic-gate 			--count, *cdest++ = *csrc++;
62*7c478bd9Sstevel@tonic-gate 	}
63*7c478bd9Sstevel@tonic-gate }
64*7c478bd9Sstevel@tonic-gate 
65*7c478bd9Sstevel@tonic-gate void
bzero(void * p,size_t n)66*7c478bd9Sstevel@tonic-gate bzero(void *p, size_t n)
67*7c478bd9Sstevel@tonic-gate {
68*7c478bd9Sstevel@tonic-gate 	char	*cp;
69*7c478bd9Sstevel@tonic-gate 
70*7c478bd9Sstevel@tonic-gate 	for (cp = p; n != 0; n--)
71*7c478bd9Sstevel@tonic-gate 		*cp++ = 0;
72*7c478bd9Sstevel@tonic-gate }
73