SundanceLinearEigenproblem.hpp

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// 
//                              Sundance
//                 Copyright (2005) Sandia Corporation
// 
// Copyright (year first published) Sandia Corporation.  Under the terms 
// of Contract DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government 
// retains certain rights in this software.
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// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
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#ifndef SUNDANCE_LINEAREIGENPROBLEM_H
#define SUNDANCE_LINEAREIGENPROBLEM_H

#include "SundanceDefs.hpp"
#include "SundanceLinearProblem.hpp"
#include "SundanceEigensolution.hpp"
#include "SundanceFunctionalEvaluator.hpp"
#include "PlayaEigensolver.hpp"

namespace Sundance
{
using namespace Sundance;
using namespace Sundance;
using namespace Sundance;
using namespace Sundance;
using namespace Sundance;
using namespace Teuchos;
using namespace Playa;


/**
 *
 */
class LinearEigenproblem
{
public:
  /** */
  LinearEigenproblem(){}
  /** */
  LinearEigenproblem(
    const Mesh& mesh, const Expr& eqn,
    const Expr& v, const Expr& u,
    const VectorType<double>& vecType) ;
  /** */
  LinearEigenproblem(
    const Mesh& mesh, const Expr& eqn,
    const Expr& v, const Expr& u,
    const VectorType<double>& vecType,
    bool lumpMass) ;
  /** */
  LinearEigenproblem(
    const Mesh& mesh, const Expr& eqn,
    const Expr& massExpr,
    const Expr& v, const Expr& u,
    const VectorType<double>& vecType,
    bool lumpMass) ;

  /** */
  Eigensolution solve(const Eigensolver<double>& solver) const ;

  /** */
  LinearOperator<double> getK() const {return kProb_.getOperator();}

  /** */
  LinearOperator<double> getM() const {return mProb_.getOperator();}
    
  
private:
  /** */
  Array<Expr> makeEigenfunctions(Array<Vector<double> >& ev) const ;

  /** */
  LinearProblem makeMassProb(
    const Mesh& mesh,
    const Expr& massExpr,
    const Expr& v, const Expr& u,
    const VectorType<double>& vecType) const ;

  /** */
  LinearOperator<double> 
  lumpedOperator(const LinearOperator<double>& M) const ;

  bool lumpMass_;
  LinearProblem kProb_;
  LinearProblem mProb_;
  LinearOperator<double> M_;
  LinearOperator<double> MUnlumped_;
  DiscreteSpace discSpace_;
};




}


#endif