triangular_matrix.hpp

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/* This file is part of OpenKalman, a header-only C++ library for
 * Kalman filters and other recursive filters.
 *
 * Copyright (c) 2019-2024 Christopher Lee Ogden <ogden@gatech.edu>
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/.
 */

#ifndef OPENKALMAN_TRIANGULAR_MATRIX_HPP
#define OPENKALMAN_TRIANGULAR_MATRIX_HPP


namespace OpenKalman
{
  template<typename T, TriangleType t = TriangleType::any>
#ifdef __cpp_concepts
  concept triangular_matrix = indexible<T> and
    (interface::indexible_object_traits<std::decay_t<T>>::template is_triangular<t> or constant_diagonal_matrix<T>);
#else
  constexpr bool triangular_matrix = internal::is_explicitly_triangular<T, t>::value or constant_diagonal_matrix<T>;
#endif


} // namespace OpenKalman

#endif //OPENKALMAN_TRIANGULAR_MATRIX_HPP