Package org.ejml.sparse.csc.misc

Class ApplyFillReductionPermutation_DSCC

java.lang.Object

org.ejml.sparse.csc.misc.ApplyFillReductionPermutation_DSCC

public class ApplyFillReductionPermutation_DSCC
extends Object

Applies the fill reduction row pivots to the input matrix to reduce fill in during decomposition/solve. P*A*Q where P are row pivots and Q are column pivots.

Constructor Summary

Constructors

Constructor	Description
ApplyFillReductionPermutation_DSCC(@Nullable ComputePermutation<DMatrixSparseCSC> fillReduce, boolean symmetric)

Method Summary

Modifier and Type	Method	Description
DMatrixSparseCSC	apply(DMatrixSparseCSC A)	Computes and applies the fill reduction permutation.
@org.jetbrains.annotations.Nullable int[]	getArrayP()
@org.jetbrains.annotations.Nullable int[]	getArrayPinv()
@org.jetbrains.annotations.Nullable int[]	getArrayQ()
@Nullable ComputePermutation<DMatrixSparseCSC>	getFillReduce()
IGrowArray	getGw()
boolean	isApplied()
void	setGw(IGrowArray gw)

Methods inherited from class java.lang.Object

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

Constructor Details

ApplyFillReductionPermutation_DSCC

public ApplyFillReductionPermutation_DSCC(@Nullable
 @Nullable ComputePermutation<DMatrixSparseCSC> fillReduce,
 boolean symmetric)

Method Details

apply

public DMatrixSparseCSC apply(DMatrixSparseCSC A)

Computes and applies the fill reduction permutation. Either A is returned (unmodified) or the permutated version of A.

Parameters:

A - Input matrix. unmodified.

Returns:

A permuted matrix. Might be A or a different matrix.

getArrayPinv

@Nullable
public @org.jetbrains.annotations.Nullable int[] getArrayPinv()

getArrayP

@Nullable
public @org.jetbrains.annotations.Nullable int[] getArrayP()

getArrayQ

@Nullable
public @org.jetbrains.annotations.Nullable int[] getArrayQ()

getGw

public IGrowArray getGw()

setGw

public void setGw(IGrowArray gw)

getFillReduce

@Nullable
public @Nullable ComputePermutation<DMatrixSparseCSC> getFillReduce()

isApplied

public boolean isApplied()