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rAKA/src/common/aka_compatibilty_with_cpp_standard.hh
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aka_compatibilty_with_cpp_standard.hh
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/**
* @file aka_compatibilty_with_cpp_standard.hh
*
* @author Nicolas Richart
*
* @date creation Wed Oct 25 2017
*
* @brief The content of this file is taken from the possible implementations on
* http://en.cppreference.com
*
* @section LICENSE
*
* Copyright (©) 2010-2011 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* Akantu is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* Akantu 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 Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Akantu. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include <type_traits>
/* -------------------------------------------------------------------------- */
#ifndef __AKANTU_AKA_COMPATIBILTY_WITH_CPP_STANDARD_HH__
#define __AKANTU_AKA_COMPATIBILTY_WITH_CPP_STANDARD_HH__
namespace std {
// Part taken from C++14
#if __cplusplus < 201402L
template <bool B, class T = void>
using enable_if_t = typename enable_if<B, T>::type;
#endif
// Part taken from C++17
#if __cplusplus < 201703L
// bool_constant
template <bool B> using bool_constant = integral_constant<bool, B>;
namespace {
template <bool B> constexpr bool bool_constant_v = bool_constant<B>::value;
}
// conjunction
template <class...> struct conjunction : std::true_type {};
template <class B1> struct conjunction<B1> : B1 {};
template <class B1, class... Bn>
struct conjunction<B1, Bn...>
: std::conditional_t<bool(B1::value), conjunction<Bn...>, B1> {};
#endif
}
#endif /* __AKANTU_AKA_COMPATIBILTY_WITH_CPP_STANDARD_HH__ */
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