/*strcasecmp.cCreated Oct 14, 1991 by Philip Homburg*/#include <ctype.h>#include <string.h>#ifdef __STDC__#define _CONST	const#else#define _CONST#endifintstrcasecmp(s1, s2)_CONST char *s1, *s2;{	int c1, c2;	while (c1= toupper(*s1++), c2= toupper(*s2++), c1 == c2 && (c1 & c2))		;	if (c1 & c2)		return c1 < c2 ? -1 : 1;	return c1 ? 1 : (c2 ? -1 : 0);}intstrncasecmp(s1, s2, len)_CONST char *s1, *s2;size_t len;{	int c1, c2;	do {		if (len == 0)			return 0;		len--;	} while (c1= toupper(*s1++), c2= toupper(*s2++), c1 == c2 && (c1 & c2))		;	if (c1 & c2)		return c1 < c2 ? -1 : 1;	return c1 ? 1 : (c2 ? -1 : 0);}