https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119092
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- https://github.com/can1357/xstd/blob/c954497bb8542d451886363b52489615a21c4a68/includes/xstd/math.hpp#L666 uses it too. Though I think its usage is also semi questionable.