str_is_number     100 ext/socket/raddrinfo.c static int str_is_number(const char *);
str_is_number     115 ext/socket/raddrinfo.c 	if (str_is_number(tmp_servname) && atoi(servname) == 0) {
str_is_number     517 ext/socket/raddrinfo.c     if (socktype_hack && hints->ai_socktype == 0 && str_is_number(portp)) {