org.ejml.alg.dense.decomposition.lu

Class LUDecompositionAlt_D64

java.lang.Object

org.ejml.alg.dense.decomposition.lu.LUDecompositionBase_D64

org.ejml.alg.dense.decomposition.lu.LUDecompositionAlt_D64

All Implemented Interfaces:

DecompositionInterface<DenseMatrix64F>, LUDecomposition<DenseMatrix64F>

public class LUDecompositionAlt_D64
extends LUDecompositionBase_D64

An LU decomposition algorithm that originally came from Jama. In general this is faster than what is in NR since it creates a cache of a column, which makes a big difference in larger matrices.

Author:

Peter Abeles

Field Summary

Fields inherited from class org.ejml.alg.dense.decomposition.lu.LUDecompositionBase_D64

dataLU, indx, LU, m, maxWidth, n, pivot, pivsign, vv

Constructor Summary

Constructors

Constructor and Description
LUDecompositionAlt_D64()

Method Summary

Methods

Modifier and Type	Method and Description
boolean	decompose(DenseMatrix64F a) This is a modified version of what was found in the JAMA package.

Methods inherited from class org.ejml.alg.dense.decomposition.lu.LUDecompositionBase_D64

_getVV, _solveVectorInternal, computeDeterminant, decomposeCommonInit, getIndx, getLower, getLU, getPivot, getPivot, getUpper, inputModified, isSingular, quality, setExpectedMaxSize

Methods inherited from class java.lang.Object

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

Constructor Detail

LUDecompositionAlt_D64

public LUDecompositionAlt_D64()

Method Detail

decompose

public boolean decompose(DenseMatrix64F a)

This is a modified version of what was found in the JAMA package. The order that it performs its permutations in is the primary difference from NR

Parameters:

a - The matrix that is to be decomposed. Not modified.

Returns:

true If the matrix can be decomposed and false if it can not.