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constexpr test for integral constant

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This commit is contained in:
Joachim Schoeberl 2023-08-18 09:40:29 +02:00
parent c5b1177151
commit 06ae01b5a7
1 changed files with 21 additions and 0 deletions
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21
libsrc/core/utils.hpp
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@ -254,6 +254,27 @@ namespace ngcore
template <int N> using IC = std::integral_constant<int,N>; // needed for Iterate template <int N> using IC = std::integral_constant<int,N>; // needed for Iterate
namespace detail {
template <typename T, typename Enable = int>
struct IsIC_trait {
static constexpr auto check() { return false; }
};
template <typename T>
struct IsIC_trait<T, std::enable_if_t<std::is_same_v<T, IC<T::value>> == true, int> > {
static constexpr auto check() { return true; }
};
}
template <typename T>
constexpr bool is_IC() {
return detail::IsIC_trait<T>::check();
}
template <int NUM, typename FUNC> template <int NUM, typename FUNC>
NETGEN_INLINE void Iterate (FUNC f) NETGEN_INLINE void Iterate (FUNC f)
{ {