https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96862
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org, | |ppalka at gcc dot gnu.org, | |redi at gcc dot gnu.org Target Milestone|--- |11.0 --- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Using floating point arithmetics for + static constexpr int digits10 + = static_cast<int>(digits * numbers::ln2 / numbers::ln10); seems unsafe, indeed with -frounding-math it can't be evaluated at compile time, as it depends on the rounding mode. Perhaps add a simple constexpr function that will compute this iteratively?