https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108279
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> --- >From what I can see, they are certainly not portable. E.g. the relying on __int128 rules out various arches (basically all 32-bit arches, ia32, powerpc 32-bit among others). Not handling exceptions is a show stopper too. Guess better time investment would be to improve performance of the soft-fp versions.