#include "byte.h"

int byte_diff(s,n,t)
register char *s;
register unsigned int n;
register char *t;
{
 for (;;)
  {
   if (!n) return 0; if (*s != *t) break; ++s; ++t; --n;
   if (!n) return 0; if (*s != *t) break; ++s; ++t; --n;
   if (!n) return 0; if (*s != *t) break; ++s; ++t; --n;
   if (!n) return 0; if (*s != *t) break; ++s; ++t; --n;
  }
 return ((int)(unsigned int)(unsigned char) *s)
      - ((int)(unsigned int)(unsigned char) *t);
}