Function to_s

src/bench/nanobench.h:2736–2744

}

std::string to_s(uint64_t n) {
    std::string str;
    do {
        str += static_cast<char>('0' + static_cast<char>(n % 10));
        n /= 10;
    } while (n != 0);
    std::reverse(str.begin(), str.end());
    return str;
}

std::ostream& operator<<(std::ostream& os, Number const& n) {
    return n.write(os);