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// ************************************************************************
//
// Belos: Block Linear Solvers Package
// Copyright 2004 Sandia Corporation
//
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//@HEADER
/*! \file BelosEpetraOperator.h
\brief This file provides an Epetra_Operator interface so Belos can be integrated into
other codes as an abstract operator.
*/
#ifndef BELOS_EPETRA_OPERATOR_H
#define BELOS_EPETRA_OPERATOR_H
#include "Epetra_MultiVector.h"
#include "Epetra_Operator.h"
#include "Epetra_Map.h"
#include "Epetra_LocalMap.h"
#include "BelosLinearProblem.hpp"
#include "BelosStatusTest.hpp"
#include "BelosOutputManager.hpp"
#include "BelosEpetraAdapter.hpp"
#include "BelosBlockGmresSolMgr.hpp"
#include "BelosPseudoBlockGmresSolMgr.hpp"
#include "BelosBlockCGSolMgr.hpp"
#include "BelosPseudoBlockCGSolMgr.hpp"
#include "Teuchos_ParameterList.hpp"
/*! \class Belos::EpetraOperator
\brief This class provides and interface to the Epetra_Operator class, so Belos can be
integrated into other codes as an abstract operator.
*/
namespace Belos {
///////////////////////////////////////////////////////////////
//-------- class BelosEpetraOperator --------------------
//
// This class will allow Belos to be called as an Epetra_Operator.
// Thus, it can use itself as a preconditioner if need be. It can
// also be used as the inner iteration of Anasazi :)
//
///////////////////////////////////////////////////////////////
class EpetraOperator : public virtual Epetra_Operator {
public:
//! @name Constructor / Destructor
//@{
//! Constructor
EpetraOperator( const Teuchos::RCP<LinearProblem<double,Epetra_MultiVector,Epetra_Operator> >& lp,
const Teuchos::RCP<Teuchos::ParameterList>& plist,
bool initSolnVec = false );
//! Destructor
virtual ~EpetraOperator() {}
//@}
//! @name Attribute methods
//@{
//! Set whether the operator or its inverse should be applied. [ This option is not implemented ]
int SetUseTranspose( bool UseTranspose_in ) { return(-1); };
//@}
//! @name Operator application methods
//@{
//! Apply the operator.
int Apply( const Epetra_MultiVector &X, Epetra_MultiVector &Y ) const;
//! Apply the operator's inverse.
int ApplyInverse( const Epetra_MultiVector &X, Epetra_MultiVector &Y ) const;
//@}
//! @name Norm methods
//@{
//! Compute the infinity norm of the operator. [ This option is not implemented ]
double NormInf() const { return(0.0); };
//@}
//! @name Attribute access functions
//@{
//! Return the label of the operator.
const char* Label() const { return(&Solver[0]); };
//! Return whether the operator is using the transpose.
bool UseTranspose() const { return(false); };
//! Return whether the infinity norm is available for this operator.
bool HasNormInf() const { return(false); };
//! Return the communicator for this operator.
const Epetra_Comm& Comm() const;
//! Return the domain map for this operator.
const Epetra_Map& OperatorDomainMap() const;
//! Return the range map for this operator.
const Epetra_Map& OperatorRangeMap() const;
//@}
private:
Teuchos::RCP<SolverManager<double,Epetra_MultiVector,Epetra_Operator> > solver_;
Teuchos::RCP<LinearProblem<double,Epetra_MultiVector,Epetra_Operator> > lp_;
Teuchos::RCP<Teuchos::ParameterList> plist_;
std::vector<char> Solver;
bool initSolnVec_;
};
} //end namespace Belos
// end of file BELOS_EPETRA_OPERATOR_H
#endif
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