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