jvx.numeric

Class PnPreconditionerJacobi

java.lang.Object

jvx.numeric.PnPreconditioner

jvx.numeric.PnPreconditionerJacobi

public class PnPreconditionerJacobi
extends PnPreconditioner

Perform a diagonal (Jacobi) preconditioning from the left to the a linear equation system smat.x=b.

Author:

Jonas Hurrelmann

Version:

02.12.05, 1.00 created (jh)

Field Summary

Fields inherited from class jvx.numeric.PnPreconditioner

m_smat

Constructor Summary

Constructors

Constructor and Description
PnPreconditionerJacobi(PnSparseMatrix smat)

Method Summary

Modifier and Type	Method and Description
PdVector	apply(PdVector b, PdVector x, int dim) Apply the preconditioner to a given vector b storing the result in x using given dimension of vectors This method has to be implemented
PdVector	applyTransposed(PdVector b, PdVector x, int dim) Apply the preconditioner transposed to a given vector b storing the result in x This method has to be implemented
void	setSparseMatrix(PnSparseMatrix pm) Set the matrix to use in the preconditionert.

Methods inherited from class jvx.numeric.PnPreconditioner

apply, applyTransposed

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PnPreconditionerJacobi

public PnPreconditionerJacobi(PnSparseMatrix smat)

Method Detail

setSparseMatrix

public void setSparseMatrix(PnSparseMatrix pm)

Description copied from class: PnPreconditioner

Set the matrix to use in the preconditionert. The matrix has to be square.

This method has to be implemented

Overrides:

setSparseMatrix in class PnPreconditioner

apply

public PdVector apply(PdVector b,
                      PdVector x,
                      int dim)

Description copied from class: PnPreconditioner

Apply the preconditioner to a given vector b storing the result in x using given dimension of vectors

This method has to be implemented

Overrides:

apply in class PnPreconditioner

Returns:

x

applyTransposed

public PdVector applyTransposed(PdVector b,
                                PdVector x,
                                int dim)

Description copied from class: PnPreconditioner

Apply the preconditioner transposed to a given vector b storing the result in x

This method has to be implemented

Overrides:

applyTransposed in class PnPreconditioner

Returns:

x