org.ejml.alg.dense.decompose.chol

Class CholeskyDecompositionCommon_CD64

java.lang.Object

org.ejml.alg.dense.decompose.chol.CholeskyDecompositionCommon_CD64

All Implemented Interfaces:

org.ejml.interfaces.decomposition.CholeskyDecomposition<org.ejml.data.CDenseMatrix64F>, org.ejml.interfaces.decomposition.DecompositionInterface<org.ejml.data.CDenseMatrix64F>

Direct Known Subclasses:

CholeskyDecompositionInner_CD64

public abstract class CholeskyDecompositionCommon_CD64
extends java.lang.Object
implements org.ejml.interfaces.decomposition.CholeskyDecomposition<org.ejml.data.CDenseMatrix64F>

This is an abstract class for a Cholesky decomposition. It provides the solvers, but the actual decomposition is provided in other classes.

See Also:

CholeskyDecomposition

Field Summary

Fields

Modifier and Type	Field and Description
protected org.ejml.data.Complex64F	det
protected boolean	lower
protected int	n
protected double[]	t
protected org.ejml.data.CDenseMatrix64F	T

Constructor Summary

Constructors

Constructor and Description
CholeskyDecompositionCommon_CD64(boolean lower) Specifies if a lower or upper variant should be constructed.

Method Summary

Modifier and Type	Method and Description
org.ejml.data.CDenseMatrix64F	_getT() Returns the raw decomposed matrix.
org.ejml.data.Complex64F	computeDeterminant()
boolean	decompose(org.ejml.data.CDenseMatrix64F mat)
protected abstract boolean	decomposeLower() Performs an lower triangular decomposition.
protected abstract boolean	decomposeUpper() Performs an upper triangular decomposition.
org.ejml.data.CDenseMatrix64F	getT(org.ejml.data.CDenseMatrix64F T)
boolean	inputModified()
boolean	isLower()

Methods inherited from class java.lang.Object

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

Field Detail

n

protected int n

T

protected org.ejml.data.CDenseMatrix64F T

t

protected double[] t

lower

protected boolean lower

det

protected org.ejml.data.Complex64F det

Constructor Detail

CholeskyDecompositionCommon_CD64

public CholeskyDecompositionCommon_CD64(boolean lower)

Specifies if a lower or upper variant should be constructed.

Parameters:

lower - should a lower or upper triangular matrix be used.

Method Detail

isLower

public boolean isLower()

Specified by:

isLower in interface org.ejml.interfaces.decomposition.CholeskyDecomposition<org.ejml.data.CDenseMatrix64F>

decompose

public boolean decompose(org.ejml.data.CDenseMatrix64F mat)

Specified by:

decompose in interface org.ejml.interfaces.decomposition.DecompositionInterface<org.ejml.data.CDenseMatrix64F>

inputModified

public boolean inputModified()

Specified by:

inputModified in interface org.ejml.interfaces.decomposition.DecompositionInterface<org.ejml.data.CDenseMatrix64F>

decomposeLower

protected abstract boolean decomposeLower()

Performs an lower triangular decomposition.

Returns:

true if the matrix was decomposed.

decomposeUpper

protected abstract boolean decomposeUpper()

Performs an upper triangular decomposition.

Returns:

true if the matrix was decomposed.

getT

public org.ejml.data.CDenseMatrix64F getT(org.ejml.data.CDenseMatrix64F T)

Specified by:

getT in interface org.ejml.interfaces.decomposition.CholeskyDecomposition<org.ejml.data.CDenseMatrix64F>

_getT

public org.ejml.data.CDenseMatrix64F _getT()

Returns the raw decomposed matrix.

Returns:

A lower or upper triangular matrix.

computeDeterminant

public org.ejml.data.Complex64F computeDeterminant()

Specified by:

computeDeterminant in interface org.ejml.interfaces.decomposition.CholeskyDecomposition<org.ejml.data.CDenseMatrix64F>