xref: /illumos-gate/usr/src/cmd/lp/lib/lp/cs_strcmp.c (revision 7c478bd9)
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, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
23 /*	  All Rights Reserved  	*/
24 
25 
26 #ident	"%Z%%M%	%I%	%E% SMI"	/* SVr4.0 1.5	*/
27 /* EMACS_MODES: !fill, lnumb, !overwrite, !nodelete, !picture */
28 
29 #include "ctype.h"
30 
31 /*
32  * Compare strings ignoring case:  s1>s2: >0  s1==s2: 0  s1<s2: <0
33  */
34 
35 int
36 #if	defined(__STDC__)
cs_strcmp(char * s1,char * s2)37 cs_strcmp(
38 	char *			s1,
39 	char *			s2
40 )
41 #else
42 cs_strcmp(s1, s2)
43 register char *s1, *s2;
44 #endif
45 {
46 
47 	if(s1 == s2)
48 		return(0);
49 	while(toupper(*s1) == toupper(*s2++))
50 		if(*s1++ == '\0')
51 			return(0);
52 	return(toupper(*s1) - toupper(*--s2));
53 }
54