/* Public domain. */ #include "str.h" unsigned int str_chr(register const char *s,int c) { register char ch; register const char *t; ch = c; t = s; for (;;) { if (!*t) break; if (*t == ch) break; ++t; if (!*t) break; if (*t == ch) break; ++t; if (!*t) break; if (*t == ch) break; ++t; if (!*t) break; if (*t == ch) break; ++t; } return t - s; }