1*4887Schin /***********************************************************************
2*4887Schin *                                                                      *
3*4887Schin *               This software is part of the ast package               *
4*4887Schin *           Copyright (c) 1985-2007 AT&T Knowledge Ventures            *
5*4887Schin *                      and is licensed under the                       *
6*4887Schin *                  Common Public License, Version 1.0                  *
7*4887Schin *                      by AT&T Knowledge Ventures                      *
8*4887Schin *                                                                      *
9*4887Schin *                A copy of the License is available at                 *
10*4887Schin *            http://www.opensource.org/licenses/cpl1.0.txt             *
11*4887Schin *         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
12*4887Schin *                                                                      *
13*4887Schin *              Information and Software Systems Research               *
14*4887Schin *                            AT&T Research                             *
15*4887Schin *                           Florham Park NJ                            *
16*4887Schin *                                                                      *
17*4887Schin *                 Glenn Fowler <gsf@research.att.com>                  *
18*4887Schin *                  David Korn <dgk@research.att.com>                   *
19*4887Schin *                   Phong Vo <kpv@research.att.com>                    *
20*4887Schin *                                                                      *
21*4887Schin ***********************************************************************/
22*4887Schin #pragma prototyped
23*4887Schin 
24*4887Schin #include <ast.h>
25*4887Schin 
26*4887Schin #if _lib_strcasecmp
27*4887Schin 
28*4887Schin NoN(strcasecmp)
29*4887Schin 
30*4887Schin #else
31*4887Schin 
32*4887Schin #include <ctype.h>
33*4887Schin 
34*4887Schin #undef	strcasecmp
35*4887Schin 
36*4887Schin int
37*4887Schin strcasecmp(register const char* a, register const char* b)
38*4887Schin {
39*4887Schin 	register int	ac;
40*4887Schin 	register int	bc;
41*4887Schin 	register int	d;
42*4887Schin 
43*4887Schin 	for (;;)
44*4887Schin 	{
45*4887Schin 		ac = *a++;
46*4887Schin 		if (isupper(ac))
47*4887Schin 			ac = tolower(ac);
48*4887Schin 		bc = *b++;
49*4887Schin 		if (isupper(bc))
50*4887Schin 			bc = tolower(bc);
51*4887Schin 		if (d = ac - bc)
52*4887Schin 			return d;
53*4887Schin 		if (!ac)
54*4887Schin 			return 0;
55*4887Schin 	}
56*4887Schin }
57*4887Schin 
58*4887Schin #endif
59