srsLTE/lib/include/srsran/adt/detail/index_sequence.h

46 lines
1.3 KiB
C++

/**
* Copyright 2013-2022 Software Radio Systems Limited
*
* This file is part of srsRAN.
*
* srsRAN is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* srsRAN 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 Affero General Public License for more details.
*
* A copy of the GNU Affero General Public License can be found in
* the LICENSE file in the top-level directory of this distribution
* and at http://www.gnu.org/licenses/.
*
*/
#ifndef CPP_TESTS_INDEX_SEQUENCE_H
#define CPP_TESTS_INDEX_SEQUENCE_H
#include <cstddef>
namespace srsran {
template <std::size_t...>
struct index_sequence {};
template <std::size_t N, std::size_t... Next>
struct index_sequence_helper : public index_sequence_helper<N - 1U, N - 1U, Next...> {};
template <std::size_t... Next>
struct index_sequence_helper<0U, Next...> {
using type = index_sequence<Next...>;
};
template <std::size_t N>
using make_index_sequence = typename index_sequence_helper<N>::type;
} // namespace srsran
#endif // CPP_TESTS_INDEX_SEQUENCE_H