An Epetra operator for implementing the operator $P = M^{-1}J$ . More...

#include <LOCA_Epetra_LeftPreconditionedOp.H>

Inheritance diagram for LOCA::Epetra::LeftPreconditionedOp:

Collaboration diagram for LOCA::Epetra::LeftPreconditionedOp:

Public Member Functions
	LeftPreconditionedOp (const Teuchos::RCP< Epetra_Operator > &jacOperator, const Teuchos::RCP< Epetra_Operator > &precOperator)
	Constructor.
virtual	~LeftPreconditionedOp ()
	Destructor.
virtual int	SetUseTranspose (bool UseTranspose)
	Set to true if the transpose of the operator is requested.
virtual int	Apply (const Epetra_MultiVector &Input, Epetra_MultiVector &Result) const
	Returns the result of a Epetra_Operator applied to a Epetra_MultiVector Input in Result as described above.
virtual int	ApplyInverse (const Epetra_MultiVector &X, Epetra_MultiVector &Y) const
	Returns the result of the inverse of the operator applied to a Epetra_MultiVector Input in Result as described above.
virtual double	NormInf () const
	Returns an approximate infinity norm of the operator matrix.
virtual const char *	Label () const
	Returns a character std::string describing the operator.
virtual bool	UseTranspose () const
	Returns the current UseTranspose setting.
virtual bool	HasNormInf () const
	Returns true if the this object can provide an approximate Inf-norm, false otherwise.
virtual const Epetra_Comm &	Comm () const
	Returns a reference to the Epetra_Comm communicator associated with this operator.
virtual const Epetra_Map &	OperatorDomainMap () const
	Returns the Epetra_Map object associated with the domain of this matrix operator.
virtual const Epetra_Map &	OperatorRangeMap () const
	Returns the Epetra_Map object associated with the range of this matrix operator.

Protected Attributes
std::string	label
	Label for operator.
Teuchos::RCP< Epetra_Operator >	J
	Stores operator representing J.
Teuchos::RCP< Epetra_Operator >	M
	Stores operator representing M.
bool	useTranspose
	Flag indicating whether to use the transpose.

Detailed Description

An Epetra operator for implementing the operator $P = M^{-1}J$ .

This class implements the Epetra_Operator interface for $P = M^{-1}J$ where and are Epetra_Operator's.

Constructor & Destructor Documentation

LOCA::Epetra::LeftPreconditionedOp::LeftPreconditionedOp	(	const Teuchos::RCP< Epetra_Operator > &	jacOperator,
		const Teuchos::RCP< Epetra_Operator > &	precOperator )

Constructor.

Parameters

jacOperator	[in] Jacobian operator J
precOperator	[in] Preconditioner operator M

References J, label, M, and useTranspose.

double LOCA::Epetra::LeftPreconditionedOp::NormInf ( ) const

virtual

Returns an approximate infinity norm of the operator matrix.

This is defined only if NormInf() of the underlying operators and is defined and is given by $\|J\|_\infty+\|M\|_\infty$ .

References J, and M.

The documentation for this class was generated from the following files: