traits.hpp

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#ifndef EAGINE_UNITS_TRAITS_HPP
#define EAGINE_UNITS_TRAITS_HPP
 
#include "default.hpp"
 
namespace eagine::units {
 
// is_dimension
template <typename X>
struct is_dimension : std::false_type {};
 
template <typename X>
constexpr bool is_dimension_v = is_dimension<X>::value;
 
template <typename H, typename T>
struct is_dimension<bits::dims<H, T>> : std::true_type {};
 
// is_unit
template <typename X>
struct is_unit : std::false_type {};
 
template <typename D, typename S>
struct is_unit<unit<D, S>> : std::true_type {};
 
template <typename D, typename US, typename S>
struct is_unit<custom_dim_unit<D, US, S>> : std::true_type {};
 
// same_dimension
template <typename D, typename S>
struct same_dimension<unit<D, S>, unit<D, S>> : std::true_type {};
 
template <typename D, typename US, typename S>
struct same_dimension<unit<D, S>, custom_dim_unit<D, US, S>>
  : std::true_type {};
 
template <typename D, typename US, typename S>
struct same_dimension<custom_dim_unit<D, US, S>, unit<D, S>>
  : std::true_type {};
 
template <typename D, typename US1, typename US2, typename S>
struct same_dimension<custom_dim_unit<D, US1, S>, custom_dim_unit<D, US2, S>>
  : std::true_type {};
 
} // namespace eagine::units
 
#endif // EAGINE_UNITS_TRAITS_HPP