Module ojalgo

Package org.ojalgo.optimisation.linear

Class ProductFormInverse.ElementaryFactor

java.lang.Object

org.ojalgo.optimisation.linear.ProductFormInverse.ElementaryFactor

All Implemented Interfaces:

InvertibleFactor<java.lang.Double>, Structure1D, Structure2D

Enclosing class:

ProductFormInverse

static final class ProductFormInverse.ElementaryFactor
extends java.lang.Object
implements InvertibleFactor<java.lang.Double>

Nested Class Summary

Nested classes/interfaces inherited from interface org.ojalgo.matrix.transformation.InvertibleFactor

InvertibleFactor.IdentityFactor<N extends java.lang.Comparable<N>>

Nested classes/interfaces inherited from interface org.ojalgo.structure.Structure1D

Structure1D.BasicMapper<T>, Structure1D.IndexMapper<T>, Structure1D.IntIndex, Structure1D.LongIndex, Structure1D.LoopCallback

Nested classes/interfaces inherited from interface org.ojalgo.structure.Structure2D

Structure2D.IntRowColumn, Structure2D.Logical<S extends Structure2D,B extends Structure2D.Logical<S,B>>, Structure2D.LongRowColumn, Structure2D.ReducibleTo1D<R extends Structure1D>, Structure2D.Reshapable, Structure2D.RowColumnKey<R,C>, Structure2D.RowColumnMapper<R,C>

Field Summary

Fields

Modifier and Type	Field	Description
private SparseArray<java.lang.Double>	myColumn
private int	myIndex
private double	myNegatedDiagonal

Constructor Summary

Constructors

Constructor	Description
ElementaryFactor(SparseArray<java.lang.Double> column, int index, double diagonalElement)

Method Summary

Modifier and Type	Method	Description
void	btran(double[] arg)
void	btran(PhysicalStore<java.lang.Double> arg)	Backwards-transformation
void	ftran(double[] arg)
void	ftran(PhysicalStore<java.lang.Double> arg)	Forward-transformation
int	getColDim()
(package private) SparseArray<java.lang.Double>	getColumn()
int	getRowDim()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.ojalgo.structure.Structure2D

count, countColumns, countRows, firstInColumn, firstInRow, getMaxDim, getMinDim, isEmpty, isFat, isScalar, isSquare, isTall, isVector, limitOfColumn, limitOfRow, size

Field Detail

myColumn

private final SparseArray<java.lang.Double> myColumn

myIndex

private final int myIndex

myNegatedDiagonal

private final double myNegatedDiagonal

Constructor Detail

ElementaryFactor

ElementaryFactor(SparseArray<java.lang.Double> column,
                 int index,
                 double diagonalElement)

Method Detail

btran

public void btran(double[] arg)

Specified by:

btran in interface InvertibleFactor<java.lang.Double>

See Also:

InvertibleFactor.IdentityFactor.btran(PhysicalStore)

btran

public void btran(PhysicalStore<java.lang.Double> arg)

Description copied from interface: InvertibleFactor

Backwards-transformation

Solve [x]^T[A] = [b]^T (equivalent to [A]^T[x] = [b]) by transforming [b] into [x] in-place.

Specified by:

btran in interface InvertibleFactor<java.lang.Double>

Parameters:

arg - [b] transformed into [x]

ftran

public void ftran(double[] arg)

Specified by:

ftran in interface InvertibleFactor<java.lang.Double>

See Also:

InvertibleFactor.IdentityFactor.ftran(PhysicalStore)

ftran

public void ftran(PhysicalStore<java.lang.Double> arg)

Description copied from interface: InvertibleFactor

Forward-transformation

Solve [A][x] = [b] by transforming [b] into [x] in-place.

Specified by:

ftran in interface InvertibleFactor<java.lang.Double>

Parameters:

arg - [b] transformed into [x]

getColDim

public int getColDim()

Specified by:

getColDim in interface Structure2D

Returns:

The number of columns

getRowDim

public int getRowDim()

Specified by:

getRowDim in interface Structure2D

Returns:

The number of rows

getColumn

SparseArray<java.lang.Double> getColumn()