https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93871
--- Comment #43 from Thomas Henlich <thenlich at gcc dot gnu.org> --- (In reply to Steve Kargl from comment #42) > gfortran currently does not implement IEEE_FMA along > with a few additional IEEE_ARITHMETIC features added > in F2018. > > Note, gcc/builtins.def has fma, fmaf, and fmal covered. > We'll need a mapping in libquadmath if it has a __float128 > fma. It has: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=46402