ref: 83c240a88a73f442b884cfa7bd7293d7f0f00a80
dir: /lib/scc/casecmp.c/
static char sccsid[] = "@(#) ./lib/scc/casecmp.c";
#include <ctype.h>
#include "../../inc/scc.h"
int
casecmp(const char *s1, const char *s2)
{
while (*s1 && toupper(*s1) == toupper(*s2))
++s1, ++s2;
return *s1 - *s2;
}