SolverSetting.hpp

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/*******************************************************************************
 * Copyright (C) 2017-2023 Theodore Chang
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/
 
#ifndef SOLVERSETTING_HPP
#define SOLVERSETTING_HPP
 
#include "Preconditioner.hpp"
 
enum class Precision {
    MIXED,
    FULL
};
 
enum class IterativeSolver {
    BICGSTAB,
    GMRES,
    NONE
};
 
enum class PreconditionerType {
    ILU,
    JACOBI,
    NONE
};
 
template<sp_d data_t> struct SolverSetting {
    int restart = 20;
    int max_iteration = 200;
    data_t tolerance = std::is_same_v<data_t, float> ? 1E-7 : 1E-14;
    unsigned iterative_refinement = 5;
    Precision precision = Precision::FULL;
    IterativeSolver iterative_solver = IterativeSolver::NONE;
    PreconditionerType preconditioner_type = PreconditionerType::JACOBI;
    Preconditioner<data_t>* preconditioner = nullptr;
};
 
#endif