#include "byte.h"

unsigned int byte_rchr(s,n,c)
char *s;
register unsigned int n;
int c;
{
 register char ch;
 register char *t;
 register char *u;

 ch = c;
 t = s;
 u = 0;
 for (;;)
  {
   if (!n) break; if (*t == ch) u = t; ++t; --n;
   if (!n) break; if (*t == ch) u = t; ++t; --n;
   if (!n) break; if (*t == ch) u = t; ++t; --n;
   if (!n) break; if (*t == ch) u = t; ++t; --n;
  }
 if (!u) u = t;
 return u - s;
}