endian conversion

endian.hpp

// requires C++23 or later
#include <bit>
#include <concepts>

template <std::integral T>
constexpr T hton(T value) noexcept
{
  if constexpr (std::endian::native == std::endian::little) {
    return std::byteswap(value);
  } else {
    return value;
  }
}

template <std::integral T>
constexpr T ntoh(T value) noexcept
{
  if constexpr (std::endian::native == std::endian::little) {
    return std::byteswap(value);
  } else {
    return value;
  }
}