boost::text::v1::transcode_to_utf32
// In header: <boost/text/transcode_algorithm.hpp> template<typename Ptr, std::output_iterator< uint32_t > O> transcode_result< Ptr, O > transcode_to_utf32(Ptr p, O out);
Copies the code points in the range [p, null_sentinel) to out, changing the encoding to UTF-32.
[p, null_sentinel)
out