byte_chr.c


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/* Public domain. */

#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;
}