byte_chr.c

#include "byte.h"

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

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