The low level part of that was standardized in C++17 as std::to_chars https://en.cppreference.com/w/cpp/utility/to_chars https://en.cppreference.com/w/cpp/util

The low level part of that was standardized in C++17 as std::to_chars https://en.cppreference.com/w/cpp/utility/to_chars https://en.cppreference.com/w/cpp/utility/to_chars