Class C

include/common.h:94–100

// Short name for fast compilation
template <auto v>
struct C {
  using type = C<v>;
  static constexpr auto value = v;
  using value_type = decltype(v);
  HOST_DEVICE constexpr operator value_type() const noexcept { return value; }
  HOST_DEVICE constexpr value_type operator()() const noexcept { return value; }
};

template <class T, T v>
using constant = C<v>;