https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104772
--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jonathan Wakely <r...@gcc.gnu.org>: https://gcc.gnu.org/g:f150a084e25eaa98afaf25e2211001047ecc8d44 commit r14-1433-gf150a084e25eaa98afaf25e2211001047ecc8d44 Author: Jonathan Wakely <jwak...@redhat.com> Date: Wed May 17 14:02:14 2023 +0100 libstdc++: Add std::numeric_limits<__float128> specialization [PR104772] As suggested by Jakub in the PR, this just hardcodes the constants with a Q suffix, since the properties of __float128 are not going to change. We can only define it for non-strict modes because the suffix gives an error otherwise, even in system headers: limits:2085: error: unable to find numeric literal operator 'operator""Q' libstdc++-v3/ChangeLog: PR libstdc++/104772 * include/std/limits (numeric_limits<__float128>): Define. * testsuite/18_support/numeric_limits/128bit.cc: New test.