[Bug libstdc++/43622] Incomplete C++ library support for __float128

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43622

--- Comment #32 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Hmm, yes. Well I think we can at least make std::is_integral<__int128> true,
which will remove once source of surprises for users.