Package rocks.palaiologos.maja.matrix

Class DoubleLUPDecompositionResult

java.lang.Object

rocks.palaiologos.maja.matrix.DoubleLUPDecompositionResult

public class DoubleLUPDecompositionResult
extends Object

The result of LUP decomposition.

Constructor Summary

Constructors

Constructor	Description
DoubleLUPDecompositionResult(DoubleMatrix lower, DoubleMatrix upper, int[] permutation, boolean nonsingular, double determinant, int n, int m, DoubleMatrix LU)

Method Summary

Modifier and Type	Method	Description
double	determinant()	Get the determinant of the matrix.
DoubleMatrix	lower()	Get the lower triangular matrix.
boolean	nonsingular()	True whether the matrix is nonsingular.
int[]	permutation()	Get the permutation/pivot vector.
DoubleMatrix	solve(DoubleMatrix B)	Solve A * X = B.
DoubleMatrix	upper()	Get the upper triangular matrix.

Methods inherited from class java.lang.Object

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

Constructor Details

DoubleLUPDecompositionResult

public DoubleLUPDecompositionResult(DoubleMatrix lower,
 DoubleMatrix upper,
 int[] permutation,
 boolean nonsingular,
 double determinant,
 int n,
 int m,
 DoubleMatrix LU)

Method Details

solve

public DoubleMatrix solve(DoubleMatrix B)

Solve A * X = B.

Returns:

X s.t. L * U * X = B(piv, :)

lower

public DoubleMatrix lower()

Get the lower triangular matrix.

upper

public DoubleMatrix upper()

Get the upper triangular matrix.

permutation

public int[] permutation()

Get the permutation/pivot vector.

nonsingular

public boolean nonsingular()

True whether the matrix is nonsingular.

determinant

public double determinant()

Get the determinant of the matrix.

Returns: