1 /*-
2 * Copyright (c) 1996, 2020 Oracle and/or its affiliates. All rights reserved.
3 *
4 * See the file LICENSE for license information.
5 */
6 /*
7 * Copyright (c) 1990, 1993
8 * The Regents of the University of California. All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * $Id$
35 */
36
37 #include "db_config.h"
38
39 #include "db_int.h"
40
41 /*
42 * memcmp --
43 *
44 * PUBLIC: #ifndef HAVE_MEMCMP
45 * PUBLIC: int memcmp __P((const void *, const void *, size_t));
46 * PUBLIC: #endif
47 */
48 int
memcmp(s1,s2,n)49 memcmp(s1, s2, n)
50 const void *s1, *s2;
51 size_t n;
52 {
53 if (n != 0) {
54 unsigned char *p1 = (unsigned char *)s1,
55 *p2 = (unsigned char *)s2;
56 do {
57 if (*p1++ != *p2++)
58 return (*--p1 - *--p2);
59 } while (--n != 0);
60 }
61 return (0);
62 }
63