meta::integral

Defined in header <mgs/meta/concepts/integral.hpp>.

template <typename T>
concept integral = std::is_integral<T>::value;

Pre-C++20 implementation of the std::integral concept.

---

Concept emulation

namespace mgs {
namespace meta {

template <typename T>
struct is_integral { /* ... */ };

template <typename T>
constexpr auto is_integral_v = is_integral<T>::value;

template <typename T,
          typename = std::enable_if_t<is_integral_v<T>>>
using integral = T;

} // namespace meta
} // namespace mgs

Example

#include <mgs/meta/concepts/integral.hpp>

using namespace mgs::meta;

static_assert(is_integral_v<int>, "");
static_assert(!is_integral_v<float>, "");