org.ejml.alg.dense.linsol.chol

Class LinearSolverCholLDL

java.lang.Object

org.ejml.alg.dense.linsol.LinearSolverAbstract_D64

org.ejml.alg.dense.linsol.chol.LinearSolverCholLDL

All Implemented Interfaces:

org.ejml.interfaces.linsol.LinearSolver<org.ejml.data.DenseMatrix64F>

public class LinearSolverCholLDL
extends LinearSolverAbstract_D64

Field Summary

Fields inherited from class org.ejml.alg.dense.linsol.LinearSolverAbstract_D64

A, numCols, numRows

Constructor Summary

Constructors

Constructor and Description
LinearSolverCholLDL()
LinearSolverCholLDL(CholeskyDecompositionLDL_D64 decomposer)

Method Summary

Modifier and Type	Method and Description
org.ejml.interfaces.decomposition.CholeskyLDLDecomposition<org.ejml.data.DenseMatrix64F>	getDecomposition()
void	invert(org.ejml.data.DenseMatrix64F inv) Sets the matrix 'inv' equal to the inverse of the matrix that was decomposed.
boolean	modifiesA()
boolean	modifiesB()
double	quality()
boolean	setA(org.ejml.data.DenseMatrix64F A)
void	solve(org.ejml.data.DenseMatrix64F B, org.ejml.data.DenseMatrix64F X) Using the decomposition, finds the value of 'X' in the linear equation below: A*x = b where A has dimension of n by n, x and b are n by m dimension.

Methods inherited from class org.ejml.alg.dense.linsol.LinearSolverAbstract_D64

_setA, getA

Methods inherited from class java.lang.Object

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

Constructor Detail

LinearSolverCholLDL

public LinearSolverCholLDL(CholeskyDecompositionLDL_D64 decomposer)

LinearSolverCholLDL

public LinearSolverCholLDL()

Method Detail

setA

public boolean setA(org.ejml.data.DenseMatrix64F A)

quality

public double quality()

solve

public void solve(org.ejml.data.DenseMatrix64F B,
                  org.ejml.data.DenseMatrix64F X)

Using the decomposition, finds the value of 'X' in the linear equation below:
A*x = b
where A has dimension of n by n, x and b are n by m dimension.

*Note* that 'b' and 'x' can be the same matrix instance.

Parameters:

B - A matrix that is n by m. Not modified.

X - An n by m matrix where the solution is writen to. Modified.

invert

public void invert(org.ejml.data.DenseMatrix64F inv)

Sets the matrix 'inv' equal to the inverse of the matrix that was decomposed.

Specified by:

invert in interface org.ejml.interfaces.linsol.LinearSolver<org.ejml.data.DenseMatrix64F>

Overrides:

invert in class LinearSolverAbstract_D64

Parameters:

inv - Where the value of the inverse will be stored. Modified.

modifiesA

public boolean modifiesA()

modifiesB

public boolean modifiesB()

getDecomposition

public org.ejml.interfaces.decomposition.CholeskyLDLDecomposition<org.ejml.data.DenseMatrix64F> getDecomposition()