byte_chr.c

   1 #include "byte.h"
   2
   3 unsigned int byte_chr(s,n,c)
   4 char *s;
   5 register unsigned int n;
   6 int c;
   7 {
   8   register char ch;
   9   register char *t;
  10
  11   ch = c;
  12   t = s;
  13   for (;;) {
  14     if (!n) break; if (*t == ch) break; ++t; --n;
  15     if (!n) break; if (*t == ch) break; ++t; --n;
  16     if (!n) break; if (*t == ch) break; ++t; --n;
  17     if (!n) break; if (*t == ch) break; ++t; --n;
  18   }
  19   return t - s;
  20 }