Object to control scaling of vectors and linear systems. More...

#include <NOX_Epetra_Scaling.H>

Public Types
enum	SourceType { None, RowSum, ColSum, UserDefined }
	Describes where the scaling vector comes from.

enum	ScaleType { Left, Right }
	Describes the type of scaling to apply.

Public Member Functions
	Scaling ()
	Constructor.

virtual	~Scaling ()
	Virtual destructor.

virtual void	addUserScaling (ScaleType type, const Teuchos::RCP< Epetra_Vector > &D)
	Add a user supplied diagonal scale vector to the scaling object.

virtual void	addRowSumScaling (ScaleType type, const Teuchos::RCP< Epetra_Vector > &D)
	Add "Row Sum" scaling to the scaling object. The supplied vector is used to store the current row sum vector.

virtual void	addColSumScaling (ScaleType type, const Teuchos::RCP< Epetra_Vector > &D)
	Add "Col Sum" scaling to the scaling object. The supplied vector is used to store the current column sum vector.

virtual void	computeScaling (const Epetra_LinearProblem &problem)
	Computes Row Sum scaling diagonal vectors. Only needs to be called if a row or column sum scaling has been requested.

virtual void	scaleLinearSystem (Epetra_LinearProblem &problem)
	Scales the linear system.

virtual void	unscaleLinearSystem (Epetra_LinearProblem &problem)
	Remove the scaling from the linear system.

virtual void	applyRightScaling (const Epetra_Vector &input, Epetra_Vector &result)
	Applies any RIGHT scaling vectors to an input vector.

virtual void	applyLeftScaling (const Epetra_Vector &input, Epetra_Vector &result)
	Applies any LEFT scaling vectors to an input vector.

virtual void	print (std::ostream &os)
	Printing.

Detailed Description

Object to control scaling of vectors and linear systems.

Currently this assumes a diagonal scaling only! Once epetra can do matrix-matrix multiplies we will expand this class.

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

Public Types