[Bug libstdc++/113260] missing from_chars/to_chars for __float128

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113260

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
_Float128 is supported in older c++ standards for gcc.  That is it does not
error out for -std=gnu++11 even.