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