#include <iostream>
#include <clocale>
#include <boost/multiprecision/cpp_int.hpp>

int main()
{
    // us locale works just fine as it does not introduce thousands separators
    //std::locale::global(std::locale("C")); 
    // german locale does not work consistently
    std::locale::global(std::locale("de"));

    boost::multiprecision::uint128_t i(9999);
    boost::multiprecision::uint128_t j("9999999999999999");
    // should display both numbers consistently w.r.t. thousands separator. Preferably respecting locale imbued.
    // instead it shows 9.999
    // 9999999999999999
    std::cout << i << std::endl << j << std::endl;
}