Some discussion about core constant expressions from consteval parameters: https://stackoverflow.com/questions/56130792/will-consteval-functions-allow-template-parameters-dependent-on-function-argumen https://stackoverflow.com/questions/73211686/c20-consteval-functions-and-constexpr-variables-are-they-guaranteed-to-be-ev https://www.reddit.com/r/cpp/comments/lxmv2z/allowing_parameters_of_consteval_function_to_be/ https://github.com/cplusplus/papers/issues/603 (P1045 constexpr Function Parameters) perhaps https://github.com/cplusplus/papers/issues/1458 (P2781 std::constexpr_wrapper)