org.ejml.alg.dense.misc
Class RrefGaussJordanRowPivot

java.lang.Object
  org.ejml.alg.dense.misc.RrefGaussJordanRowPivot

All Implemented Interfaces:

ReducedRowEchelonForm<DenseMatrix64F>

public class RrefGaussJordanRowPivot
extends Object
implements ReducedRowEchelonForm<DenseMatrix64F>

Reduction to RREF using Gauss-Jordan elimination with row (partial) pivots.

Author:

Peter Abeles

Constructor Summary

RrefGaussJordanRowPivot()

Method Summary

void	reduce(DenseMatrix64F A, int coefficientColumns) Puts the augmented matrix into RREF.
void	setTolerance(double tol) Specifies tolerance for determining if the system is singular and it should stop processing.
protected static void	swapRows(DenseMatrix64F A, int rowA, int rowB)

Methods inherited from class java.lang.Object

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

Constructor Detail

RrefGaussJordanRowPivot

public RrefGaussJordanRowPivot()

Method Detail

setTolerance

public void setTolerance(double tol)

Description copied from interface: ReducedRowEchelonForm

Specifies tolerance for determining if the system is singular and it should stop processing. A reasonable value is: tol = EPS/max(||tol||).

Specified by:

setTolerance in interface ReducedRowEchelonForm<DenseMatrix64F>

Parameters:

tol - Tolerance for singular matrix. A reasonable value is: tol = EPS/max(||tol||). Or just set to zero.

reduce

public void reduce(DenseMatrix64F A,
                   int coefficientColumns)

Description copied from interface: ReducedRowEchelonForm

Puts the augmented matrix into RREF. The coefficient matrix is stored in columns less than coefficientColumns.

Specified by:

reduce in interface ReducedRowEchelonForm<DenseMatrix64F>

Parameters:

A - Input: Augmented matrix. Output: RREF. Modified.

coefficientColumns - Number of coefficients in the system matrix.

swapRows

protected static void swapRows(DenseMatrix64F A,
                               int rowA,
                               int rowB)