template <class CharT, class Traits, size_t B, class D, bool S>
basic_ostream<CharT, Traits>& operator<<(
    basic_ostream<CharT, Traits>& os, const fwnbi::basic_integer<B, D, S>& value
);

Formatted output to std::basic_ostream.

#include "fwnbi.hpp"
#include <iostream>

using namespace fwnbi::literals;

int main() {
    fwnbi::uint128_t value = 74565_ull128;
    std::cout << std::showbase << std::hex << value << '\n';
}

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