Epetra_InvOperator Class Reference

Epetra_InvOperator: An implementation of the Epetra_Operator class that reverses the role of Apply() and ApplyInverse() methods. More...

#include <Epetra_InvOperator.h>

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List of all members.

Public Member Functions

Constructor

 Epetra_InvOperator (Epetra_Operator *operatorIn)
 Uses an Epetra_Operator instance to implement the Epetra_Operator interface.
virtual ~Epetra_InvOperator ()
 Destructor.
Atribute set methods

int SetUseTranspose (bool UseTranspose_in)
 If set true, transpose of this operator will be applied.
Mathematical functions

int Apply (const Epetra_MultiVector &X, Epetra_MultiVector &Y) const
 Returns the result of a Epetra_InvOperator applied to a Epetra_MultiVector X in Y.
int ApplyInverse (const Epetra_MultiVector &X, Epetra_MultiVector &Y) const
 Returns the result of a Epetra_InvOperator inverse applied to an Epetra_MultiVector X in Y.
double NormInf () const
 Returns the infinity norm of the global matrix.
Atribute access functions

const char * Label () const
 Returns a character string describing the operator.
Epetra_OperatorOperator () const
 Returns a pointer to the Epetra_Operator operator object that was used to create this Epetra_InvOperator object.
bool UseTranspose () const
 Returns the current UseTranspose setting.
bool HasNormInf () const
 Returns true if the this object can provide an approximate Inf-norm, false otherwise.
const Epetra_CommComm () const
 Returns a pointer to the Epetra_Comm communicator associated with this operator.
const Epetra_MapOperatorDomainMap () const
 Returns the Epetra_BlockMap object associated with the domain of this matrix operator.
const Epetra_MapOperatorRangeMap () const
 Returns the Epetra_BlockMap object associated with the range of this matrix operator.

Protected Attributes

Epetra_Operatoroperator_
string Label_

Detailed Description

Epetra_InvOperator: An implementation of the Epetra_Operator class that reverses the role of Apply() and ApplyInverse() methods.

The Epetra_InvOperator class implements Epetra_Operator using another pre-constructed Epetra_Operator object. Once constructed, an Epetra_InvOperator can be used as the inverse of the input operator object as long as the appropriate Apply and ApplyInverse methods are implemented in the original Epetra_Operator object.


Constructor & Destructor Documentation

Epetra_InvOperator::Epetra_InvOperator ( Epetra_Operator operatorIn  )  [inline]

Uses an Epetra_Operator instance to implement the Epetra_Operator interface.

Facilitates the use of an Epetra_Operator instance as an inverse operator.

Parameters:
In - A fully-constructed Epetra_Operator object.

References Epetra_Operator::Label().


Member Function Documentation

int Epetra_InvOperator::Apply ( const Epetra_MultiVector X,
Epetra_MultiVector Y 
) const [inline, virtual]

Returns the result of a Epetra_InvOperator applied to a Epetra_MultiVector X in Y.

Parameters:
In X - A Epetra_MultiVector of dimension NumVectors to multiply with matrix.
Out Y -A Epetra_MultiVector of dimension NumVectors containing result.
Warning:
- This method has no effect and returns -1 as error code.

Implements Epetra_Operator.

References Epetra_Operator::ApplyInverse().

int Epetra_InvOperator::ApplyInverse ( const Epetra_MultiVector X,
Epetra_MultiVector Y 
) const [inline, virtual]

Returns the result of a Epetra_InvOperator inverse applied to an Epetra_MultiVector X in Y.

Parameters:
In X - A Epetra_MultiVector of dimension NumVectors to solve for.
Out Y -A Epetra_MultiVector of dimension NumVectors containing result.
Returns:
Integer error code, set to 0 if successful.

Implements Epetra_Operator.

References Epetra_Operator::Apply().

int Epetra_InvOperator::SetUseTranspose ( bool  UseTranspose_in  )  [inline, virtual]

If set true, transpose of this operator will be applied.

This flag allows the transpose of the given operator to be used implicitly. Setting this flag affects only the Apply() and ApplyInverse() methods. If the implementation of this interface does not support transpose use, this method should return a value of -1.

Parameters:
In UseTranspose_in - If true, multiply by the transpose of operator, otherwise just use operator.
Warning:
- This method has no effect and returns -1 as error code.

Implements Epetra_Operator.

References Epetra_Operator::SetUseTranspose().


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