1 #include "str.h" 2 str_len(char * s)3 unsigned int str_len(char *s) 4 { 5 register char *t; 6 7 t = s; 8 for (;;) { 9 if (!*t) return t - s; ++t; 10 if (!*t) return t - s; ++t; 11 if (!*t) return t - s; ++t; 12 if (!*t) return t - s; ++t; 13 } 14 } 15