concepts.hpp

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// Copyright (c) 2020--present, The Simons Foundation
// This file is part of TRIQS/nda and is licensed under the Apache License, Version 2.0.
// SPDX-License-Identifier: Apache-2.0
// See LICENSE in the root of this distribution for details.

 
#pragma once
 
#include <version>
 
// libcpp below 13 has incomplete <concepts>
#if defined(_LIBCPP_VERSION) and _LIBCPP_VERSION < 13000
 
#include <type_traits>
 
namespace std {
 
  template <class T>
  concept integral = std::is_integral_v<T>;
 
} // namespace std
 
#endif