neov5

#include <cstdint>
#include <type_traits>
#include <bit>

using namespace std;

template <endian E, typename T, typename Enable = std::enable_if_t<std::is_integral_v<T>>> class endianint;

static_assert(endian::native == endian::little or endian::native == endian::big,
              "Mixed endian machines are not supported");