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solvers.hh
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/**
* file solvers.hh
*
* @author Till Junge <till.junge@epfl.ch>
*
* @date 24 Apr 2018
*
* @brief Free functions for solving rve problems
*
* Copyright © 2018 Till Junge
*
* µSpectre is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 3, or (at
* your option) any later version.
*
* µSpectre 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 Lesser General Public License
* along with µSpectre; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* * Boston, MA 02111-1307, USA.
*
* Additional permission under GNU GPL version 3 section 7
*
* If you modify this Program, or any covered work, by linking or combining it
* with proprietary FFT implementations or numerical libraries, containing parts
* covered by the terms of those libraries' licenses, the licensors of this
* Program grant you additional permission to convey the resulting work.
*/
#ifndef SRC_SOLVER_SOLVERS_HH_
#define SRC_SOLVER_SOLVERS_HH_
#include "solver/solver_base.hh"
#include <Eigen/Dense>
#include <vector>
#include <string>
namespace muSpectre {
using LoadSteps_t = std::vector<Eigen::MatrixXd>;
/**
* Uses the Newton-conjugate Gradient method to find the static
* equilibrium of a cell given a series of mean applied strains
*/
std::vector<OptimizeResult> newton_cg(Cell & cell,
const LoadSteps_t & load_steps,
SolverBase & solver, Real newton_tol,
Real equil_tol, Dim_t verbose = 0);
/**
* Uses the Newton-conjugate Gradient method to find the static
* equilibrium of a cell given a mean applied strain
*/
OptimizeResult newton_cg(Cell & cell,
const Eigen::Ref<Eigen::MatrixXd> load_step,
SolverBase & solver, Real newton_tol, Real equil_tol,
Dim_t verbose = 0) {
LoadSteps_t load_steps{load_step};
return newton_cg(cell, load_steps, solver, newton_tol, equil_tol, verbose)
.front();
}
/* ---------------------------------------------------------------------- */
/**
* Uses the method proposed by de Geus method to find the static
* equilibrium of a cell given a series of mean applied strains
*/
std::vector<OptimizeResult> de_geus(Cell & cell,
const LoadSteps_t & load_steps,
SolverBase & solver, Real newton_tol,
Real equil_tol, Dim_t verbose = 0);
/* ---------------------------------------------------------------------- */
/**
* Uses the method proposed by de Geus method to find the static
* equilibrium of a cell given a mean applied strain
*/
OptimizeResult de_geus(Cell & cell,
const Eigen::Ref<Eigen::MatrixXd> load_step,
SolverBase & solver, Real newton_tol, Real equil_tol,
Dim_t verbose = 0) {
return de_geus(cell, LoadSteps_t{load_step}, solver, newton_tol, equil_tol,
verbose)[0];
}
} // namespace muSpectre
#endif // SRC_SOLVER_SOLVERS_HH_

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