https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113260
--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to g.peterhoff from comment #5) > ??? I asked for std::from_chars/std::to_chars - which of course doesn't work: > https://godbolt.org/z/n34dTajoc std::from_chars/std::to_chars for extended floating point types is only available with C++23 though. I really doubt they will be added for __float128 . Maybe they could be enabled for pre-C++23 for the extended FP types too .. But a libstdc++ maintainer should answer that question since that would be an extension. Even having them for __float128 will be an extension too.