is_scaled_tag.h

 
//          Copyright John McFarlane 2019.
// Distributed under the Boost Software License, Version 1.0.
//    (See accompanying file ../LICENSE_1_0.txt or copy at
//          http://www.boost.org/LICENSE_1_0.txt)
 
#if !defined(CNL_IMPL_SCALED_IS_SCALED_TAG_H)
#define CNL_IMPL_SCALED_IS_SCALED_TAG_H
 
#include "declaration.h"
 
#include <type_traits>
 
namespace cnl {
    template<class Tag>
    struct is_scaled_tag : std::false_type {
    };
 
    template<int Exponent, int Radix>
    struct is_scaled_tag<power<Exponent, Radix>> : std::true_type {
    };
 
    template<class Tag>
    concept scaled_tag = is_scaled_tag<Tag>::value;
}
 
#endif  // CNL_IMPL_SCALED_IS_SCALED_TAG_H