org.ejml.data

Class FixedMatrix2x2_64F

java.lang.Object

org.ejml.data.FixedMatrix2x2_64F

All Implemented Interfaces:

java.io.Serializable, FixedMatrix64F, Matrix, RealMatrix64F

public class FixedMatrix2x2_64F
extends java.lang.Object
implements FixedMatrix64F

Fixed sized 2 by FixedMatrix2x2_64F matrix. The matrix is stored as class variables for very fast read/write. aXY is the value of row = X and column = Y.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
double	a11
double	a12
double	a21
double	a22

Constructor Summary

Constructors

Constructor and Description
FixedMatrix2x2_64F()
FixedMatrix2x2_64F(double a11, double a12, double a21, double a22)
FixedMatrix2x2_64F(FixedMatrix2x2_64F o)

Method Summary

Modifier and Type	Method and Description
<T extends Matrix> T	copy() Creates an exact copy of the matrix
double	get(int row, int col) Returns the value of value of the specified matrix element.
int	getNumCols() Returns the number of columns in this matrix.
int	getNumElements() Returns the number of elements in this matrix, which is the number of rows times the number of columns.
int	getNumRows() Returns the number of rows in this matrix.
void	print() Prints the matrix to standard out.
void	set(int row, int col, double val) Sets the value of the specified matrix element.
void	set(Matrix original) Sets this matrix to be identical to the 'original' matrix passed in.
double	unsafe_get(int row, int col) Same as RealMatrix64F.get(int, int) but does not perform bounds check on input parameters.
void	unsafe_set(int row, int col, double val) Same as RealMatrix64F.set(int, int, double) but does not perform bounds check on input parameters.

Methods inherited from class java.lang.Object

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

Field Detail

a11

public double a11

a12

public double a12

a21

public double a21

a22

public double a22

Constructor Detail

FixedMatrix2x2_64F

public FixedMatrix2x2_64F()

FixedMatrix2x2_64F

public FixedMatrix2x2_64F(double a11,
                          double a12,
                          double a21,
                          double a22)

FixedMatrix2x2_64F

public FixedMatrix2x2_64F(FixedMatrix2x2_64F o)

Method Detail

get

public double get(int row,
                  int col)

Description copied from interface: RealMatrix64F

Returns the value of value of the specified matrix element.

Specified by:

get in interface RealMatrix64F

Parameters:

row - Matrix element's row index..

col - Matrix element's column index.

Returns:

The specified element's value.

unsafe_get

public double unsafe_get(int row,
                         int col)

Description copied from interface: RealMatrix64F

Same as RealMatrix64F.get(int, int) but does not perform bounds check on input parameters. This results in about a 25% speed increase but potentially sacrifices stability and makes it more difficult to track down simple errors. It is not recommended that this function be used, except in highly optimized code where the bounds are implicitly being checked.

Specified by:

unsafe_get in interface RealMatrix64F

Parameters:

row - Matrix element's row index..

col - Matrix element's column index.

Returns:

The specified element's value.

set

public void set(int row,
                int col,
                double val)

Description copied from interface: RealMatrix64F

Sets the value of the specified matrix element.

Specified by:

set in interface RealMatrix64F

Parameters:

row - Matrix element's row index..

col - Matrix element's column index.

val - The element's new value.

unsafe_set

public void unsafe_set(int row,
                       int col,
                       double val)

Description copied from interface: RealMatrix64F

Same as RealMatrix64F.set(int, int, double) but does not perform bounds check on input parameters. This results in about a 25% speed increase but potentially sacrifices stability and makes it more difficult to track down simple errors. It is not recommended that this function be used, except in highly optimized code where the bounds are implicitly being checked.

Specified by:

unsafe_set in interface RealMatrix64F

Parameters:

row - Matrix element's row index..

col - Matrix element's column index.

val - The element's new value.

set

public void set(Matrix original)

Description copied from interface: Matrix

Sets this matrix to be identical to the 'original' matrix passed in.

Specified by:

set in interface Matrix

getNumRows

public int getNumRows()

Description copied from interface: Matrix

Returns the number of rows in this matrix.

Specified by:

getNumRows in interface Matrix

Returns:

Number of rows.

getNumCols

public int getNumCols()

Description copied from interface: Matrix

Returns the number of columns in this matrix.

Specified by:

getNumCols in interface Matrix

Returns:

Number of columns.

getNumElements

public int getNumElements()

Description copied from interface: RealMatrix64F

Returns the number of elements in this matrix, which is the number of rows times the number of columns.

Specified by:

getNumElements in interface RealMatrix64F

Returns:

Number of elements in this matrix.

copy

public <T extends Matrix> T copy()

Description copied from interface: Matrix

Creates an exact copy of the matrix

Specified by:

copy in interface Matrix

print

public void print()

Description copied from interface: Matrix

Prints the matrix to standard out.

Specified by:

print in interface Matrix