EigenSolver.hpp

Go to the documentation of this file.

//==============================================================================
//
//                       Seismo Virtual Laboratory
//             Module for Serial and Parallel Analysis of seismic 
//         wave propagation and soil-structure interaction simulation
//         Copyright (C) 2018-2021, The California Institute of Technology
//                         All Rights Reserved.
//
// Commercial use of this program without express permission of the California
// Institute of Technology, is strictly  prohibited. See  file "COPYRIGHT"  in
// main  directory  for  information on  usage  and  redistribution, and for a
// DISCLAIMER OF ALL WARRANTIES.
//
//==============================================================================
//
// Written by:
//   Danilo S. Kusanovic (dkusanov@caltech.edu)
//   Elnaz E. Seylabi    (elnaze@unr.edu)
//
// Supervised by:
//   Domniki M. Asimaki  (domniki@caltech.edu)
//
// References : 
//   [1] https://eigen.tuxfamily.org/dox/group__TopicSparseSystems.html
//
// Description:
//------------------------------------------------------------------------------

#ifndef _EIGENSOLVER_HPP_
#define _EIGENSOLVER_HPP_

#include <Eigen/Dense>
#include <Eigen/SparseCore>
#include <Eigen/SparseCholesky>

#include "LinearSystem.hpp"

class EigenSolver : public LinearSystem {

    public:
        EigenSolver(bool flag = false);

        ~EigenSolver();

        bool SolveSystem(Eigen::SparseMatrix<double> &A, Eigen::VectorXd &b);

        const Eigen::VectorXd& GetSolution();

    protected:
        bool Flag;

        bool Factored;

        bool Initialized;

        Eigen::VectorXd x;

        Eigen::SimplicialLDLT<Eigen::SparseMatrix<double> > Solver;
};

#endif