Re: [boost] boost::math::tools::promote_args not works with C++23 FP-types

On 19/02/2023 14:48, Gero Peterhoff via Boost wrote:

Hi, promote_args from not works with new/extended C++23 FP-types https://godbolt.org/z/13fq8a3d7

The problem might be the outdated "manual variadic" implementation for C++03. Well, according to the documentation (https://www.boost.org/doc/libs/1_81_0), boost::math requires C++11 anyway; with a switch to C++11 it also works (std::common_type).

I'm not surprised by this, and we will probably need to fix Config first and also have a working (ie released) C++23 compiler too. The problem line is here: https://github.com/boostorg/math/blob/1c5194f3c36826db4e18ba52e7e601bae002c3... where we assume that std::is_floating_point implies one of the 3 types we know about. John.