/*
 * strcmp - compare string s1 to s2
 */

#include "config.h"

int				/* <0 for <, 0 for ==, >0 for > */
strcmp(s1, s2)
CONST char *s1;
CONST char *s2;
{
	register CONST char *scan1;
	register CONST char *scan2;

	scan1 = s1;
	scan2 = s2;
	while (*scan1 != '\0' && *scan1 == *scan2) {
		scan1++;
		scan2++;
	}

	/*
	 * The following case analysis is necessary so that characters
	 * which look negative collate low against normal characters but
	 * high against the end-of-string NUL.
	 */
	if (*scan1 == '\0' && *scan2 == '\0')
		return(0);
	else if (*scan1 == '\0')
		return(-1);
	else if (*scan2 == '\0')
		return(1);
	else
		return(*scan1 - *scan2);
}