gfortran IEEE module with 80-bit and 128-bit floats

[FX]

> Please try attached prototype patch that implements discussed hooks for x86.
> Compile tested, but IMO "should work”.

Thanks! I’ll try it out.

I’ve meanwhile made progress on some necessary work before we can enable support in the library, but it seems I’ve hit a snag with the i386 __builtin_remainderf expansion. Would you have any idea what’s going wrong? https://gcc.gnu.org/ml/gcc/2014-09/msg00388.html

Thanks again,
FX