Package org.ejml.dense.block

Class MatrixOps_FDRB

java.lang.Object

org.ejml.dense.block.MatrixOps_FDRB

public class MatrixOps_FDRB
extends java.lang.Object

Various operations on FMatrixRBlock.

Constructor Summary

Constructors

Constructor	Description
MatrixOps_FDRB()

Method Summary

Modifier and Type	Method	Description
static boolean	blockAligned(int blockLength, org.ejml.data.FSubmatrixD1 A)	Checks to see if the submatrix has its boundaries along inner blocks.
static void	checkIdenticalShape(org.ejml.data.FMatrixRBlock A, org.ejml.data.FMatrixRBlock B)	Checks to see if the two matrices have an identical shape an block size.
static org.ejml.data.FMatrixRMaj	convert(org.ejml.data.FMatrixRBlock src, org.ejml.data.FMatrixRMaj dst)	Converts a row major block matrix into a row major matrix.
static org.ejml.data.FMatrixRBlock	convert(org.ejml.data.FMatrixRMaj A)
static org.ejml.data.FMatrixRBlock	convert(org.ejml.data.FMatrixRMaj A, int blockLength)
static void	convert(org.ejml.data.FMatrixRMaj src, org.ejml.data.FMatrixRBlock dst)	Converts a row major matrix into a row major block matrix.
static void	convertBlockToRow(int numRows, int numCols, int blockLength, float[] data, float[] tmp)	Converts matrix data stored is a block row major format into a row major format in place.
static void	convertRowToBlock(int numRows, int numCols, int blockLength, float[] data, float[] tmp)	Converts matrix data stored is a row major format into a block row major format in place.
static void	convertTranSrc(org.ejml.data.FMatrixRMaj src, org.ejml.data.FMatrixRBlock dst)	Converts the transpose of a row major matrix into a row major block matrix.
static void	copyTriangle(boolean upper, org.ejml.data.FMatrixRBlock src, org.ejml.data.FMatrixRBlock dst)	Copies either the upper or lower triangular portion of src into dst.
static org.ejml.data.FMatrixRBlock	createRandom(int numRows, int numCols, float min, float max, java.util.Random rand)
static org.ejml.data.FMatrixRBlock	createRandom(int numRows, int numCols, float min, float max, java.util.Random rand, int blockLength)
static void	extractAligned(org.ejml.data.FMatrixRBlock src, org.ejml.data.FMatrixRBlock dst)	Extracts a matrix from src into dst.
static org.ejml.data.FMatrixRBlock	identity(int numRows, int numCols, int blockLength)	Returns a new matrix with ones along the diagonal and zeros everywhere else.
static boolean	isEquals(org.ejml.data.FMatrixRBlock A, org.ejml.data.FMatrixRBlock B)
static boolean	isEquals(org.ejml.data.FMatrixRBlock A, org.ejml.data.FMatrixRBlock B, float tol)
static void	mult(org.ejml.data.FMatrixRBlock A, org.ejml.data.FMatrixRBlock B, org.ejml.data.FMatrixRBlock C)
static void	multTransA(org.ejml.data.FMatrixRBlock A, org.ejml.data.FMatrixRBlock B, org.ejml.data.FMatrixRBlock C)
static void	multTransB(org.ejml.data.FMatrixRBlock A, org.ejml.data.FMatrixRBlock B, org.ejml.data.FMatrixRBlock C)
static void	set(org.ejml.data.FMatrixRBlock A, float value)	Sets every element in the matrix to the specified value. aij = value
static void	setIdentity(org.ejml.data.FMatrixRBlock A)	Sets the value of A to all zeros except along the diagonal.
static org.ejml.data.FMatrixRBlock	transpose(org.ejml.data.FMatrixRBlock A, org.ejml.data.FMatrixRBlock A_tran)	Transposes a block matrix.
static void	zeroTriangle(boolean upper, org.ejml.data.FMatrixRBlock A)	Sets either the upper or low triangle of a matrix to zero

Methods inherited from class java.lang.Object

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

Constructor Detail

MatrixOps_FDRB

public MatrixOps_FDRB()

Method Detail

convert

public static void convert(org.ejml.data.FMatrixRMaj src,
                           org.ejml.data.FMatrixRBlock dst)

Converts a row major matrix into a row major block matrix.

Parameters:

src - Original FMatrixRMaj. Not modified.

dst - Equivalent FMatrixRBlock. Modified.

convertRowToBlock

public static void convertRowToBlock(int numRows,
                                     int numCols,
                                     int blockLength,
                                     float[] data,
                                     float[] tmp)

Converts matrix data stored is a row major format into a block row major format in place.

Parameters:

numRows - number of rows in the matrix.

numCols - number of columns in the matrix.

blockLength - Block size in the converted matrix.

data - Matrix data in a row-major format. Modified.

tmp - Temporary data structure that is to be the size of a block row.

convert

public static org.ejml.data.FMatrixRMaj convert(org.ejml.data.FMatrixRBlock src,
                                                org.ejml.data.FMatrixRMaj dst)

Converts a row major block matrix into a row major matrix.

Parameters:

src - Original FMatrixRBlock.. Not modified.

dst - Equivalent FMatrixRMaj. Modified.

convertBlockToRow

public static void convertBlockToRow(int numRows,
                                     int numCols,
                                     int blockLength,
                                     float[] data,
                                     float[] tmp)

Converts matrix data stored is a block row major format into a row major format in place.

Parameters:

numRows - number of rows in the matrix.

numCols - number of columns in the matrix.

blockLength - Block size in the converted matrix.

data - Matrix data in a block row-major format. Modified.

tmp - Temporary data structure that is to be the size of a block row.

convertTranSrc

public static void convertTranSrc(org.ejml.data.FMatrixRMaj src,
                                  org.ejml.data.FMatrixRBlock dst)

Converts the transpose of a row major matrix into a row major block matrix.

Parameters:

src - Original FMatrixRMaj. Not modified.

dst - Equivalent FMatrixRBlock. Modified.

mult

public static void mult(org.ejml.data.FMatrixRBlock A,
                        org.ejml.data.FMatrixRBlock B,
                        org.ejml.data.FMatrixRBlock C)

multTransA

public static void multTransA(org.ejml.data.FMatrixRBlock A,
                              org.ejml.data.FMatrixRBlock B,
                              org.ejml.data.FMatrixRBlock C)

multTransB

public static void multTransB(org.ejml.data.FMatrixRBlock A,
                              org.ejml.data.FMatrixRBlock B,
                              org.ejml.data.FMatrixRBlock C)

transpose

public static org.ejml.data.FMatrixRBlock transpose(org.ejml.data.FMatrixRBlock A,
                                                    org.ejml.data.FMatrixRBlock A_tran)

Transposes a block matrix.

Parameters:

A - Original matrix. Not modified.

A_tran - Transposed matrix. Modified.

createRandom

public static org.ejml.data.FMatrixRBlock createRandom(int numRows,
                                                       int numCols,
                                                       float min,
                                                       float max,
                                                       java.util.Random rand)

createRandom

public static org.ejml.data.FMatrixRBlock createRandom(int numRows,
                                                       int numCols,
                                                       float min,
                                                       float max,
                                                       java.util.Random rand,
                                                       int blockLength)

convert

public static org.ejml.data.FMatrixRBlock convert(org.ejml.data.FMatrixRMaj A,
                                                  int blockLength)

convert

public static org.ejml.data.FMatrixRBlock convert(org.ejml.data.FMatrixRMaj A)

isEquals

public static boolean isEquals(org.ejml.data.FMatrixRBlock A,
                               org.ejml.data.FMatrixRBlock B)

isEquals

public static boolean isEquals(org.ejml.data.FMatrixRBlock A,
                               org.ejml.data.FMatrixRBlock B,
                               float tol)

zeroTriangle

public static void zeroTriangle(boolean upper,
                                org.ejml.data.FMatrixRBlock A)

Sets either the upper or low triangle of a matrix to zero

copyTriangle

public static void copyTriangle(boolean upper,
                                org.ejml.data.FMatrixRBlock src,
                                org.ejml.data.FMatrixRBlock dst)

Copies either the upper or lower triangular portion of src into dst. Dst can be smaller than src.

Parameters:

upper - If the upper or lower triangle is copied.

src - The source matrix. Not modified.

dst - The destination matrix. Modified.

set

public static void set(org.ejml.data.FMatrixRBlock A,
                       float value)

Sets every element in the matrix to the specified value.

a_ij = value

Parameters:

A - A matrix whose elements are about to be set. Modified.

value - The value each element will have.

setIdentity

public static void setIdentity(org.ejml.data.FMatrixRBlock A)

Sets the value of A to all zeros except along the diagonal.

Parameters:

A - Block matrix.

identity

public static org.ejml.data.FMatrixRBlock identity(int numRows,
                                                   int numCols,
                                                   int blockLength)

Returns a new matrix with ones along the diagonal and zeros everywhere else.

Parameters:

numRows - Number of rows.

numCols - NUmber of columns.

blockLength - Block length.

Returns:

An identify matrix.

checkIdenticalShape

public static void checkIdenticalShape(org.ejml.data.FMatrixRBlock A,
                                       org.ejml.data.FMatrixRBlock B)

Checks to see if the two matrices have an identical shape an block size.

Parameters:

A - Matrix.

B - Matrix.

extractAligned

public static void extractAligned(org.ejml.data.FMatrixRBlock src,
                                  org.ejml.data.FMatrixRBlock dst)

Extracts a matrix from src into dst. The submatrix which is copied has its initial coordinate at (0,0) and ends at (dst.numRows,dst.numCols). The end rows/columns must be aligned along blocks or else it will silently screw things up.

Parameters:

src - Matrix which a submatrix is being extracted from. Not modified.

dst - Where the submatrix is written to. Its rows and columns be less than or equal to 'src'. Modified.

blockAligned

public static boolean blockAligned(int blockLength,
                                   org.ejml.data.FSubmatrixD1 A)

Checks to see if the submatrix has its boundaries along inner blocks.

Parameters:

blockLength - Size of an inner block.

A - Submatrix.

Returns:

If it is block aligned or not.