com.mockturtlesolutions.snifflib.linalg

Class AbstractLUAlgorithm

java.lang.Object

com.mockturtlesolutions.snifflib.linalg.AbstractLUAlgorithm

All Implemented Interfaces:

LUAlgorithm

Direct Known Subclasses:

NRLUAlgorithm

public abstract class AbstractLUAlgorithm
extends java.lang.Object
implements LUAlgorithm

An abstract class to provide methods (usually abstract) for whatever common features are among various QRalgorithm implementations.

Constructor Summary

Constructors

Constructor and Description
AbstractLUAlgorithm(DblMatrix X)

Method Summary

Methods

Modifier and Type	Method and Description
abstract DblMatrix	getL() Get the lower triangular L of the LU decomposition.
abstract int	getSwapFactor() Returns (-1)^S where S is the number or row interchanges.
abstract DblMatrix	getU() Get the upper triangular matrix U of the LU decomposition.
abstract boolean	isSingular() Return true if a singular condition is encountered during.
abstract DblMatrix	solveSystem(DblMatrix Y) Solve a linear system (X*b = Y) returning the coeficients as a DblMatrix.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractLUAlgorithm

public AbstractLUAlgorithm(DblMatrix X)

Method Detail

getSwapFactor

public abstract int getSwapFactor()

Returns (-1)^S where S is the number or row interchanges.

getL

public abstract DblMatrix getL()

Description copied from interface: LUAlgorithm

Get the lower triangular L of the LU decomposition.

Specified by:

getL in interface LUAlgorithm

getU

public abstract DblMatrix getU()

Get the upper triangular matrix U of the LU decomposition.

Specified by:

getU in interface LUAlgorithm

isSingular

public abstract boolean isSingular()

Return true if a singular condition is encountered during.

Specified by:

isSingular in interface LUAlgorithm

solveSystem

public abstract DblMatrix solveSystem(DblMatrix Y)

Solve a linear system (X*b = Y) returning the coeficients as a DblMatrix.

Specified by:

solveSystem in interface LUAlgorithm