On 21/04/2023 15:05, Gero Peterhoff via Boost wrote:

Hi Matt, the ccmath functions must/could only work with std types. Is this assumption correct?

The constexpr code path is almost certainly for std types only. However, they can be used in generic functions declared constexpr, which are not necessarily used in a constexpr context: in that case the argument could be any suitable type. John.