bool.hpp

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// This file is a part of NiHu, a C++ BEM template library.
//
// Copyright (C) 2012-2014  Peter Fiala <fiala@hit.bme.hu>
// Copyright (C) 2012-2014  Peter Rucz <rucz@hit.bme.hu>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
#ifndef BOOL_HPP_INCLUDED
#define BOOL_HPP_INCLUDED
 
#include <type_traits>
 
namespace tmp
{
    template <class A>
    struct not_ : std::integral_constant<bool, !A::value> {};
 
    template <class...Args>
    struct or_ : std::false_type {};
    
    template <class...Args>
    struct or_<std::false_type, Args...> : or_<Args...> {};
 
    template <class...Args>
    struct or_<std::true_type, Args...> : std::true_type {};
 
    template <class...Args>
    struct and_ : std::false_type {};
 
    template <>
    struct and_<std::true_type> : std::true_type {};
    
    template <class...Args>
    struct and_<std::true_type, Args...> : and_<Args...> {};
 
    template <class...Args>
    struct and_<std::false_type, Args...> : std::false_type {};
    
}
 
#endif /* BOOL_HPP_INCLUDED */