Is there already a constexpr std::bit_cast to use with g++

Question

I wonder if there is a usable constexpr std::bit_cast or equivalent already for g++-trunk in c++2a mode. I need this for a compile-time-check.

Answer 1

根据cppreference ， std::bit_cast日， std::bit_cast尚未在任何主要 C++ 编译器中实现。