1 /* $NetBSD: strcasecmp.c,v 1.1 2000/11/01 19:37:18 thorpej Exp $ */
2
3 /*
4 * Copyright (c) 1994 Christian E. Hopps
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Christian E. Hopps.
18 * 4. The name of the author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #if defined(LIBC_SCCS) && !defined(lint)
34 static char *rcsid = "$NetBSD: strcasecmp.c,v 1.1 2000/11/01 19:37:18 thorpej Exp $";
35 #endif /* LIBC_SCCS and not lint */
36
37 #if defined(_KERNEL) || defined(_STANDALONE)
38 #include <lib/libkern/libkern.h>
39 #else
40 #include <string.h>
41 #endif
42
43 int
44 strcasecmp(s1, s2)
45 const char *s1;
46 const char *s2;
47 {
48 unsigned char c1, c2;
49
50 do {
51 c1 = (unsigned char) *s1++;
52 c2 = (unsigned char) *s2++;
53
54 if (c1 != c2) {
55 if (c1 >= 'A' && c1 <= 'Z' &&
56 c2 >= 'a' && c2 <= 'z')
57 c1 += 'a' - 'A';
58 else if (c1 >= 'a' && c1 <= 'z' &&
59 c2 >= 'A' && c2 <= 'Z')
60 c2 += 'a' - 'A';
61 if (c1 != c2)
62 return c1 - c2;
63 }
64 } while (c1 != 0);
65
66 return 0;
67 }
Cache object: cf3392ddf2f8e864145c89f24298d7bb
|