update_equation_solver.h

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/*
 * Copyright 2021 MusicScience37 (Kenta Kabashima)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#pragma once
 
#include <type_traits>  // IWYU pragma: keep
 
#include "num_collect/base/concepts/const_reference_of.h"
#include "num_collect/ode/concepts/ode_equation_solver.h"
 
namespace num_collect::ode::concepts {
 
template <typename T>
concept update_equation_solver =
    ode::concepts::ode_equation_solver<T> && requires() {
        requires requires(T& obj, typename T::problem_type& problem,
            typename T::scalar_type time, typename T::scalar_type step_size,
            const typename T::variable_type& variable,
            typename T::scalar_type solution_coeff) {
            obj.update_jacobian(
                problem, time, step_size, variable, solution_coeff);
        };
 
        requires requires(T& obj,
            const typename T::variable_type& solution_offset,
            typename T::variable_type& solution) {
            obj.init(solution_offset, solution);
        };
 
        requires requires(const typename T::scalar_type& time, T& obj,
            const typename T::variable_type& solution_offset,
            typename T::variable_type& solution) {
            obj.init(time, solution_offset, solution);
        };
 
        requires requires(const T& obj) {
            {
                obj.solution_offset()
            } -> base::concepts::const_reference_of<typename T::variable_type>;
        };
    };
 
}  // namespace num_collect::ode::concepts