ArpackSolver.hxx

// Copyright (C) 2010 Lin Wu
//
// This file is part of the linear-algebra library Seldon,
// http://seldon.sourceforge.net/.
//
// Seldon 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 2.1 of the License, or (at your option)
// any later version.
//
// Seldon 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 Lesser General Public License for
// more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with Seldon. If not, see http://www.gnu.org/licenses/.
 
 
#ifndef SELDON_FILE_ARPACKSOLVER_HXX
 
namespace Seldon
{
 
  
  template<class T, class Y>
  class ArpackSolver
  {
  protected:
 
    /*** Parameters ***/
 
    int n_;
    int nev_;
    int ncv_;
    int maxit_;
    T tol_;
    string solver_type_;
    int mode_;
    string which_;
    char bmat_;
    char HowMny_;
    Y sigma_;
    Y *resid_;
    int ishfts_;
    int ldv_;
 
    /*** Variables ***/
 
    int *pselect_;
    int ierr_;
    bool rvec_;
    int ido_;
    int info_;
    int lworkl_;
    int lworkv_;
    int lrwork_;
    int iparam_[11];
    int ipntr_[14];
    T *rwork_;
    Y *workl_;
    Y *workd_;
    Y *workev_;
    Y *v_;
 
    /*** Output variables ***/
 
    int nconv_;
    Y *eig_val_;
    Y *eig_vec_;
 
  public:
 
    /*** Constructor and destructor ***/
 
    ArpackSolver();
    ~ArpackSolver();
 
    /*** Initialization ***/
 
    void Init(int n, int nev, int ncv, int maxit, T tol, string solver_type,
              int mode, string which, char bmat, char HowMny,
              bool with_arpack_verbose = false);
    void CheckParameter();
    void Clear();
    void Allocate();
    void Deallocate();
    void SetArpackVerbose();
    static void SetArpackVerbose(string s);
    void ClearArpackVerbose();
 
    /*** Access methods ***/
 
    Y* GetFirstWorkVector();
    Y* GetSecondWorkVector();
    Y* GetEigenVector(int index);
    Y GetEigenValue(int index);
    int GetReverseCommunicationFlag();
    void SetReverseCommunicationFlag(int ido);
    int GetInfoFlag();
    void SetInfoFlag(int info);
    int GetConvergedNumber();
 
    /*** Methods **/
 
    bool Continue();
    bool Finish();
  };
 
 
} // namespace Seldon.
 
 
#define SELDON_FILE_ARPACKSOLVER_HXX
#endif