/usr/include/trilinos/Thyra_EpetraOperatorWrapper.hpp is in libtrilinos-thyra-dev 12.4.2-2.
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// ***********************************************************************
//
// Thyra: Interfaces and Support for Abstract Numerical Algorithms
// Copyright (2004) Sandia Corporation
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// @HEADER
#ifndef THYRA_EPETRA_OPERATOR_WRAPPER_HPP
#define THYRA_EPETRA_OPERATOR_WRAPPER_HPP
#include "Thyra_LinearOpBase.hpp"
#include "Epetra_Map.h"
#include "Epetra_Comm.h"
#include "Epetra_MultiVector.h"
#include "Epetra_Operator.h"
namespace Thyra {
/** \brief Implements the Epetra_Operator interface with a Thyra LinearOperator.
*
* This enables the use of absrtact Thyra operators in AztecOO as
* preconditioners and operators, without being rendered into concrete Epetra
* matrices.
*
* \ingroup Epetra_Thyra_Op_Vec_adapters_grp
*/
class EpetraOperatorWrapper : public Epetra_Operator
{
public:
/** \name Constructor, utilties. */
//@{
/** \brief . */
EpetraOperatorWrapper(const RCP<const LinearOpBase<double> > &thyraOp);
/** \brief . */
RCP<const LinearOpBase<double> > getThyraOp() const
{
return thyraOp_;
}
/** \brief . */
void copyEpetraIntoThyra(const Epetra_MultiVector &x,
const Ptr<VectorBase<double> > &thyraVec) const;
/** \brief . */
void copyThyraIntoEpetra(const VectorBase<double> &thyraVec,
Epetra_MultiVector &x) const;
//@}
/** \name Overridden from Epetra_Operator */
//@{
/** \brief . */
int SetUseTranspose(bool UseTranspose_in)
{
useTranspose_ = UseTranspose_in;
return 0;
}
/** \brief . */
int Apply(const Epetra_MultiVector& X, Epetra_MultiVector& Y) const ;
/** \brief . */
int ApplyInverse(const Epetra_MultiVector& X, Epetra_MultiVector& Y) const ;
/** \brief . */
double NormInf() const ;
/** \brief . */
const char* Label() const {return label_.c_str();}
/** \brief . */
bool UseTranspose() const {return useTranspose_;}
/** \brief . */
bool HasNormInf() const {return false;}
/** \brief . */
const Epetra_Comm& Comm() const {return *comm_;}
/** \brief . */
const Epetra_Map& OperatorDomainMap() const {return *domainMap_;}
/** \brief . */
const Epetra_Map& OperatorRangeMap() const {return *rangeMap_;}
//@}
private:
bool useTranspose_;
RCP<const LinearOpBase<double> > thyraOp_;
RCP<const VectorSpaceBase<double> > range_;
RCP<const VectorSpaceBase<double> > domain_;
RCP<const Epetra_Comm> comm_;
RCP<const Epetra_Map> rangeMap_;
RCP<const Epetra_Map> domainMap_;
std::string label_;
static RCP<const Epetra_Comm> getEpetraComm(const LinearOpBase<double>& thyraOp);
};
/** \brief Wrap a Thyra operator in the Epetra_Operator interface, and then
* wrap it again in a Thyra operator interface.
*
* This lets an arbitrary Thyra operator be given to the Thyra AztecOO
* adapters.
*
* \relates EpetraOperatorWrapper
*/
RCP<const LinearOpBase<double> >
makeEpetraWrapper(const RCP<const LinearOpBase<double> > &thyraOp);
} // namespace Thyra
#endif // THYRA_EPETRA_OPERATOR_WRAPPER_HPP
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