https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121374
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> --- (In reply to Jonathan Wakely from comment #4) > Dunno where I got 112 from, maybe just a typo. 112 is the number of explicit mantissa bits, like double has 52. But we need to include the implicit mantissa bit as well...