[Bug libstdc++/120299] GCC started using __flt128_t when __float128 exists but _Float128 does not

[tymi at tymi dot org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120299

--- Comment #4 from Tymi <tymi at tymi dot org> ---
Why not check for __clang__ and fallback to a compatible solution then?