Package org.ejml.dense.block

Class MatrixMult_DDRB

java.lang.Object

org.ejml.dense.block.MatrixMult_DDRB

public class MatrixMult_DDRB
extends Object

Matrix multiplication for DMatrixRBlock. All sub-matrices must be block aligned.

Constructor Summary

Constructors

Constructor	Description
MatrixMult_DDRB()

Method Summary

Modifier and Type	Method	Description
static void	mult(int blockLength, DSubmatrixD1 A, DSubmatrixD1 B, DSubmatrixD1 C)	Performs a matrix multiplication on DMatrixRBlock submatrices. c = a * b
static void	multMinus(int blockLength, DSubmatrixD1 A, DSubmatrixD1 B, DSubmatrixD1 C)	Performs a matrix multiplication on DMatrixRBlock submatrices. c = c - a * b
static void	multMinusTransA(int blockLength, DSubmatrixD1 A, DSubmatrixD1 B, DSubmatrixD1 C)
static void	multPlus(int blockLength, DSubmatrixD1 A, DSubmatrixD1 B, DSubmatrixD1 C)	Performs a matrix multiplication on DMatrixRBlock submatrices. c = c + a * b
static void	multPlusTransA(int blockLength, DSubmatrixD1 A, DSubmatrixD1 B, DSubmatrixD1 C)
static void	multTransA(int blockLength, DSubmatrixD1 A, DSubmatrixD1 B, DSubmatrixD1 C)	Performs a matrix multiplication with a transpose on DMatrixRBlock submatrices. c = aT * b
static void	multTransB(int blockLength, DSubmatrixD1 A, DSubmatrixD1 B, DSubmatrixD1 C)	Performs a matrix multiplication with a transpose on DMatrixRBlock submatrices. c = a * b T

Methods inherited from class java.lang.Object

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

Constructor Details

MatrixMult_DDRB

public MatrixMult_DDRB()

Method Details

mult

public static void mult(int blockLength,
 DSubmatrixD1 A,
 DSubmatrixD1 B,
 DSubmatrixD1 C)

Performs a matrix multiplication on DMatrixRBlock submatrices.

c = a * b

It is assumed that all submatrices start at the beginning of a block and end at the end of a block.

Parameters:

blockLength - Size of the blocks in the submatrix.

A - A submatrix. Not modified.

B - A submatrix. Not modified.

C - Result of the operation. Modified,

multPlus

public static void multPlus(int blockLength,
 DSubmatrixD1 A,
 DSubmatrixD1 B,
 DSubmatrixD1 C)

Performs a matrix multiplication on DMatrixRBlock submatrices.

c = c + a * b

It is assumed that all submatrices start at the beginning of a block and end at the end of a block.

Parameters:

blockLength - Size of the blocks in the submatrix.

A - A submatrix. Not modified.

B - A submatrix. Not modified.

C - Result of the operation. Modified,

multMinus

public static void multMinus(int blockLength,
 DSubmatrixD1 A,
 DSubmatrixD1 B,
 DSubmatrixD1 C)

Performs a matrix multiplication on DMatrixRBlock submatrices.

c = c - a * b

It is assumed that all submatrices start at the beginning of a block and end at the end of a block.

Parameters:

blockLength - Size of the blocks in the submatrix.

A - A submatrix. Not modified.

B - A submatrix. Not modified.

C - Result of the operation. Modified,

multTransA

public static void multTransA(int blockLength,
 DSubmatrixD1 A,
 DSubmatrixD1 B,
 DSubmatrixD1 C)

Performs a matrix multiplication with a transpose on DMatrixRBlock submatrices.

c = a^T * b

It is assumed that all submatrices start at the beginning of a block and end at the end of a block.

Parameters:

blockLength - Size of the blocks in the submatrix.

A - A submatrix. Not modified.

B - A submatrix. Not modified.

C - Result of the operation. Modified,

multPlusTransA

public static void multPlusTransA(int blockLength,
 DSubmatrixD1 A,
 DSubmatrixD1 B,
 DSubmatrixD1 C)

multMinusTransA

public static void multMinusTransA(int blockLength,
 DSubmatrixD1 A,
 DSubmatrixD1 B,
 DSubmatrixD1 C)

multTransB

public static void multTransB(int blockLength,
 DSubmatrixD1 A,
 DSubmatrixD1 B,
 DSubmatrixD1 C)

Performs a matrix multiplication with a transpose on DMatrixRBlock submatrices.

c = a * b ^T

It is assumed that all submatrices start at the beginning of a block and end at the end of a block.

Parameters:

blockLength - Length of the blocks in the submatrix.

A - A submatrix. Not modified.

B - A submatrix. Not modified.

C - Result of the operation. Modified,