Module tornado.api

Package uk.ac.manchester.tornado.api.types.matrix

Class Matrix2DDouble

java.lang.Object

uk.ac.manchester.tornado.api.types.matrix.Matrix2DDouble

All Implemented Interfaces:

Serializable, PrimitiveStorage<DoubleBuffer>, TornadoMatrixInterface<DoubleBuffer>

public final class Matrix2DDouble
extends Object
implements TornadoMatrixInterface<DoubleBuffer>

Matrix2DDouble relies on preview features of the Java platform:

• Matrix2DDouble refers to one or more preview APIs: MemorySegment.

Programs can only use Matrix2DDouble when preview features are enabled.

Preview features may be removed in a future release, or upgraded to permanent features of the Java platform.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected final int	COLUMNS	Number of columns.
protected final int	ROWS	Number of rows.

Constructor Summary

Constructors

Constructor	Description
Matrix2DDouble(double[][] matrix)
Matrix2DDouble(int rows, int columns)	Storage format for matrix.
Matrix2DDouble(int rows, int columns, DoubleArray array)	Storage format for matrix.

Method Summary

Modifier and Type	Method	Description
DoubleBuffer	asBuffer()
void	clear()
VectorDouble	column(int col)
VectorDouble	diag()
Matrix2DDouble	duplicate()
void	fill(double value)
double	get(int i, int j)
int	getFinalIndexOfRange(int fromIndex)	It returns the final index of the range to be copied, starting from the input parameter.
long	getNumBytes()
long	getNumBytesWithHeader()
int	getNumColumns()
int	getNumRows()
MemorySegmentPREVIEW	getSegment()
MemorySegmentPREVIEW	getSegmentWithHeader()
void	loadFromBuffer(DoubleBuffer buffer)
void	multiply(Matrix2DDouble a, Matrix2DDouble b)
VectorDouble	row(int row)
void	set(int i, int j, double value)
void	set(Matrix2DDouble m)
int	size()
String	toString()
String	toString(String fmt)
static void	transpose(Matrix2DDouble matrix)	Transposes the matrix in-place.

Methods inherited from class java.lang.Object

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

Field Details

ROWS

protected final int ROWS

Number of rows.

COLUMNS

protected final int COLUMNS

Number of columns.

Constructor Details

Matrix2DDouble

public Matrix2DDouble(int rows,
 int columns,
 DoubleArray array)

Storage format for matrix.

Parameters:

rows - number of rows

columns - number of columns

array - array reference which contains data

Matrix2DDouble

public Matrix2DDouble(int rows,
 int columns)

Storage format for matrix.

Parameters:

rows - number of rows

columns - number of columns

Matrix2DDouble

public Matrix2DDouble(double[][] matrix)

Method Details

transpose

public static void transpose(Matrix2DDouble matrix)

Transposes the matrix in-place.

Parameters:

matrix - matrix to transpose

clear

public void clear()

get

public double get(int i,
 int j)

set

public void set(int i,
 int j,
 double value)

row

public VectorDouble row(int row)

column

public VectorDouble column(int col)

diag

public VectorDouble diag()

fill

public void fill(double value)

multiply

public void multiply(Matrix2DDouble a,
 Matrix2DDouble b)

duplicate

public Matrix2DDouble duplicate()

set

public void set(Matrix2DDouble m)

toString

public String toString(String fmt)

toString

public String toString()

Overrides:

toString in class Object

loadFromBuffer

public void loadFromBuffer(DoubleBuffer buffer)

Specified by:

loadFromBuffer in interface PrimitiveStorage<DoubleBuffer>

asBuffer

public DoubleBuffer asBuffer()

Specified by:

asBuffer in interface PrimitiveStorage<DoubleBuffer>

size

public int size()

Specified by:

size in interface PrimitiveStorage<DoubleBuffer>

getNumBytes

public long getNumBytes()

Specified by:

getNumBytes in interface TornadoMatrixInterface<DoubleBuffer>

getNumBytesWithHeader

public long getNumBytesWithHeader()

Specified by:

getNumBytesWithHeader in interface TornadoMatrixInterface<DoubleBuffer>

getSegment

public MemorySegmentPREVIEW getSegment()

Specified by:

getSegment in interface TornadoMatrixInterface<DoubleBuffer>

getSegmentWithHeader

public MemorySegmentPREVIEW getSegmentWithHeader()

Specified by:

getSegmentWithHeader in interface TornadoMatrixInterface<DoubleBuffer>

getNumRows

public int getNumRows()

getNumColumns

public int getNumColumns()

getFinalIndexOfRange

public int getFinalIndexOfRange(int fromIndex)

It returns the final index of the range to be copied, starting from the input parameter.

Parameters:

fromIndex -

Returns:

int