Class StandardMatrix

java.lang.Object

solvers.linearSystem.simple.matrix.Matrix

solvers.linearSystem.simple.matrix.StandardMatrix

public class StandardMatrix
extends Matrix

This class provides a concrete implementation of the Matrix class that is based in a two dimensional BigRational array. The Gaussian Elimination Solver is sued to solve this system.

Author:

Jack Bradshaw

Field Summary

Fields inherited from class Matrix

basis, size, update_list

Constructor Summary

Constructors

Constructor	Description
StandardMatrix(CoMoMBasis basis, int size)

Method Summary

Modifier and Type	Method	Description
protected void	fillWithZeros()	Makes every entry in the array 0
BigRational	get(int row, int col)	Returns value a (row, col)
BigRational[][]	getArray()	Returns the matrix as a BigRational[][] array
BigRational	getDeterminatnt()
BigRational[]	multiply()	Multiplies the previous basis by the matrix
void	print()	Prints the matrix to screen
void	write(int row, int col, BigRational v)	Writes value v at position (row,col) in matrix

Methods inherited from class Matrix

getUpdateList, reset, toBeUpdated

Methods inherited from class Object

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

Constructor Details

StandardMatrix

public StandardMatrix(CoMoMBasis basis,
 int size)

Method Details

getArray

public BigRational[][] getArray()

Description copied from class: Matrix

Returns the matrix as a BigRational[][] array

Specified by:

getArray in class Matrix

Returns:

underlying matrix

write

public void write(int row,
 int col,
 BigRational v)

Description copied from class: Matrix

Writes value v at position (row,col) in matrix

Specified by:

write in class Matrix

Parameters:

row - row to be written at

col - column two be written at

v - value to be written

get

public BigRational get(int row,
 int col)

Description copied from class: Matrix

Returns value a (row, col)

Specified by:

get in class Matrix

Parameters:

row - row

col - column

Returns:

array[row][column]

multiply

public BigRational[] multiply()

Description copied from class: Matrix

Multiplies the previous basis by the matrix

Specified by:

multiply in class Matrix

Returns:

rhs of linear system

fillWithZeros

protected void fillWithZeros()

Makes every entry in the array 0

Specified by:

fillWithZeros in class Matrix

print

public void print()

Description copied from class: Matrix

Prints the matrix to screen

Specified by:

print in class Matrix

getDeterminatnt

public BigRational getDeterminatnt()