Function std::ascii_is_valid_bytes
int ascii_is_valid_bytes([]const char s)Returns 1 if every byte in s[0, len) is in [0, 127] (no NUL terminator required — for validating a raw byte range, e.g. from a socket read).
every byte < 0x80
int ascii_is_valid_bytes([]const char s)Returns 1 if every byte in s[0, len) is in [0, 127] (no NUL terminator required — for validating a raw byte range, e.g. from a socket read).
every byte < 0x80