Function IsAsciiDigit

util/string/ascii.h:79–81

}

inline bool IsAsciiDigit(unsigned char c) {
    return ::NPrivate::ASCII_CLASS[c] & ::NPrivate::CC_DIGIT;
}

inline bool IsAsciiAlpha(unsigned char c) {
    return ::NPrivate::ASCII_CLASS[c] & ::NPrivate::CC_ALPHA;