C23 has constexpr, which cannot be given for functions yet, but there's a proposal: https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2976.pdf https://www.open-

C23 has constexpr, which cannot be given for functions yet, but there's a proposal: https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2976.pdf https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2976.pdf