default.hpp

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#ifndef EAGINE_UNITS_DEFAULT_HPP
#define EAGINE_UNITS_DEFAULT_HPP
 
#include "../type_identity.hpp"
#include "fwd.hpp"
 
namespace eagine::units {
 
template <typename X, typename Y>
struct same_dimension : std::false_type {};
 
template <typename U>
struct add_result<U, U> : type_identity<U> {};
 
template <typename U>
struct sub_result<U, U> : type_identity<U> {};
 
template <typename T1, typename T2>
struct is_convertible : std::false_type {};
 
template <typename U>
struct is_convertible<U, U> : std::true_type {};
 
struct trivial_value_conv {
    template <typename T>
    constexpr auto operator()(T v) const -> T {
        return v;
    }
};
 
template <typename U>
struct value_conv<U, U> : trivial_value_conv {};
 
} // namespace eagine::units
 
#endif // EAGINE_UNITS_DEFAULT_HPP