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PLib::LUMatrix Class Template Reference

a class for the LU decomposition of a matrix. More...

#include <matrix/matrixMat.h>

Inheritance diagram for PLib::LUMatrix:

List of all members.

Public Methods
	LUMatrix (int r, int c)
	LUMatrix ()
	LUMatrix (const LUMatrix< T > &lu)
	LUMatrix (const Matrix< T > &a)
void	resize (const int r, const int c)
LUMatrix &	operator= (const LUMatrix< T > &)
LUMatrix &	decompose (const Matrix< T > &a)
T	determinant ()
Matrix< T >	inverse ()
void	inverseIn (Matrix< T > &)
Public Attributes
const Vector< int > &	pivot
Protected Attributes
int	errval
int	sign

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Detailed Description

template<class T>
class PLib::LUMatrix< T >

a class for the LU decomposition of a matrix.

This class was adapted from a class in the Kalman library written by Skip Carter (skip@taygeta.oc.nps.navy.mil

It performs the LU decomposition of a matrix. It can be used to find it's inverse and to solve linear systems.

This class can only be used with floating point values (float or double).

Author:

Skip Carter , Philippe Lavoie

Date:

22 October 1997

Definition at line 62 of file matrixMat.h.

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Member Function Documentation

template<class T> LUMatrix< T > & PLib::LUMatrix< T >::decompose (  const Matrix< T > &    a )

Generetes a LU matrix from a matrix a. Generetes a LU matrix from a matrix a. Parameters: a  the matrix to decompose Returns: a reference to itself Author: Philippe Lavoie Date: 22 October 1997 Definition at line 70 of file matrixMat.cpp. References resize.

template<class T> T PLib::LUMatrix< T >::determinant (    )

Finds the determinant of a LU matrix. Finds the determinant of a LU matrix. Returns: The value of the determinant Author: Philippe Lavoie Date: 22 October 1997 Definition at line 198 of file matrixMat.cpp. References PLib::Basic2DArray::rows.

template<class T> Matrix< T > PLib::LUMatrix< T >::inverse (    )

Finds the inverse of the LU matrix. Finds the inverse of the LU matrix. Returns: the inverse of the matrix Author: Philippe Lavoie Date: 22 October 1997 Definition at line 339 of file matrixMat.cpp. References PLib::Basic2DArray::cols, inverse, inverseIn, and PLib::Basic2DArray::rows. Referenced by inverse.

template<class T> void PLib::LUMatrix< T >::inverseIn (  Matrix< T > &    inv )

Finds the inverse of the LU matrix. Finds the inverse of the LU matrix. Parameters: inv  the inverse of the matrix Author: Philippe Lavoie Date: 22 October 1997 Definition at line 251 of file matrixMat.cpp. References PLib::Basic2DArray::cols, and PLib::Basic2DArray::rows. Referenced by inverse.

template<class T> LUMatrix< T > & PLib::LUMatrix< T >::operator= (  const LUMatrix< T > &    a )

assignment operator. Assignment operator Parameters: a  the LU matrix to copy Returns: a reference to itself Author: Philippe Lavoie Date: 22 October 1997 Definition at line 49 of file matrixMat.cpp. References PLib::Basic2DArray::cols, resize, and PLib::Basic2DArray::rows.

template<class T> void PLib::LUMatrix< T >::resize (  const int    r, const int    c )  [inline]

a destructive resize of the matrix dimensions. Changes the matrix dimensions and intialize it to 0. Parameters: nr  the new number of rows nc  the new number of columns Author: Philippe Lavoie Date: 24 January 1997 Reimplemented from PLib::Basic2DArray. Definition at line 70 of file matrixMat.h. Referenced by decompose, and operator=.

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The documentation for this class was generated from the following files:

• matrixMat.h
• matrixMat.cpp

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