Package org.ejml.dense.row

Class CommonOps_MT_DDRM

java.lang.Object

org.ejml.dense.row.CommonOps_MT_DDRM

public class CommonOps_MT_DDRM
extends Object

Functions from CommonOps_DDRM with concurrent implementations.

Method Summary

Modifier and Type	Method	Description
static <T extends DMatrix1Row> T	mult(double alpha, T a, T b, T output)	Performs the following operation: c = α * a * b cij = α ∑k=1:n { * aik * bkj}
static <T extends DMatrix1Row> T	mult(T a, T b, T output)	Performs the following operation: c = a * b cij = ∑k=1:n { aik * bkj}
static void	multAdd(double alpha, DMatrix1Row a, DMatrix1Row b, DMatrix1Row c)	Performs the following operation: c = c + α * a * b cij = cij + α * ∑k=1:n { aik * bkj}
static void	multAdd(DMatrix1Row a, DMatrix1Row b, DMatrix1Row c)	Performs the following operation: c = c + a * b cij = cij + ∑k=1:n { aik * bkj}
static void	multAddTransA(double alpha, DMatrix1Row a, DMatrix1Row b, DMatrix1Row c)	Performs the following operation: c = c + α * aT * b cij =cij + α * ∑k=1:n { aki * bkj}
static void	multAddTransA(DMatrix1Row a, DMatrix1Row b, DMatrix1Row c)	Performs the following operation: c = c + aT * b cij = cij + ∑k=1:n { aki * bkj}
static void	multAddTransAB(double alpha, DMatrix1Row a, DMatrix1Row b, DMatrix1Row c)	Performs the following operation: c = c + α * aT * bT cij = cij + α * ∑k=1:n { aki * bjk}
static void	multAddTransAB(DMatrix1Row a, DMatrix1Row b, DMatrix1Row c)	Performs the following operation: c = c + aT * bT cij = cij + ∑k=1:n { aki * bjk}
static void	multAddTransB(double alpha, DMatrix1Row a, DMatrix1Row b, DMatrix1Row c)	Performs the following operation: c = c + α * a * bT cij = cij + α * ∑k=1:n { aik * bjk}
static void	multAddTransB(DMatrix1Row a, DMatrix1Row b, DMatrix1Row c)	Performs the following operation: c = c + a * bT cij = cij + ∑k=1:n { aik * bjk}
static <T extends DMatrix1Row> T	multTransA(double alpha, T a, T b, T output)	Performs the following operation: c = α * aT * b cij = α ∑k=1:n { aki * bkj}
static <T extends DMatrix1Row> T	multTransA(T a, T b, T output)	Performs the following operation: c = aT * b cij = ∑k=1:n { aki * bkj}
static <T extends DMatrix1Row> T	multTransAB(double alpha, T a, T b, T output)	Performs the following operation: c = α * aT * bT cij = α ∑k=1:n { aki * bjk}
static <T extends DMatrix1Row> T	multTransAB(T a, T b, T output)	Performs the following operation: c = aT * bT cij = ∑k=1:n { aki * bjk}
static <T extends DMatrix1Row> T	multTransB(double alpha, T a, T b, T output)	Performs the following operation: c = α * a * bT cij = α ∑k=1:n { aik * bjk}
static <T extends DMatrix1Row> T	multTransB(T a, T b, T output)	Performs the following operation: c = a * bT cij = ∑k=1:n { aik * bjk}
static void	transpose(DMatrixRMaj mat)	Performs an "in-place" transpose.
static DMatrixRMaj	transpose(DMatrixRMaj A, @Nullable DMatrixRMaj A_tran)	Transposes matrix 'a' and stores the results in 'b': bij = aji where 'b' is the transpose of 'a'.

Methods inherited from class java.lang.Object

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

Method Details

mult

public static <T extends DMatrix1Row> T mult(T a,
 T b,
 @Nullable
 T output)

Performs the following operation:

c = a * b

c_ij = ∑_k=1:n { a_ik * b_kj}

Parameters:

a - The left matrix in the multiplication operation. Not modified.

b - The right matrix in the multiplication operation. Not modified.

output - Where the results of the operation are stored. Modified.

mult

public static <T extends DMatrix1Row> T mult(double alpha,
 T a,
 T b,
 @Nullable
 T output)

Performs the following operation:

c = α * a * b

c_ij = α ∑_k=1:n { * a_ik * b_kj}

Parameters:

alpha - Scaling factor.

a - The left matrix in the multiplication operation. Not modified.

b - The right matrix in the multiplication operation. Not modified.

output - Where the results of the operation are stored. Modified.

multTransA

public static <T extends DMatrix1Row> T multTransA(T a,
 T b,
 @Nullable
 T output)

Performs the following operation:

c = a^T * b

c_ij = ∑_k=1:n { a_ki * b_kj}

Parameters:

a - The left matrix in the multiplication operation. Not modified.

b - The right matrix in the multiplication operation. Not modified.

output - Where the results of the operation are stored. Modified.

multTransA

public static <T extends DMatrix1Row> T multTransA(double alpha,
 T a,
 T b,
 @Nullable
 T output)

Performs the following operation:

c = α * a^T * b

c_ij = α ∑_k=1:n { a_ki * b_kj}

Parameters:

alpha - Scaling factor.

a - The left matrix in the multiplication operation. Not modified.

b - The right matrix in the multiplication operation. Not modified.

output - Where the results of the operation are stored. Modified.

multTransB

public static <T extends DMatrix1Row> T multTransB(T a,
 T b,
 @Nullable
 T output)

Performs the following operation:

c = a * b^T
c_ij = ∑_k=1:n { a_ik * b_jk}

Parameters:

a - The left matrix in the multiplication operation. Not modified.

b - The right matrix in the multiplication operation. Not modified.

output - Where the results of the operation are stored. Modified.

multTransB

public static <T extends DMatrix1Row> T multTransB(double alpha,
 T a,
 T b,
 @Nullable
 T output)

Performs the following operation:

c = α * a * b^T
c_ij = α ∑_k=1:n { a_ik * b_jk}

Parameters:

alpha - Scaling factor.

a - The left matrix in the multiplication operation. Not modified.

b - The right matrix in the multiplication operation. Not modified.

output - Where the results of the operation are stored. Modified.

multTransAB

public static <T extends DMatrix1Row> T multTransAB(T a,
 T b,
 @Nullable
 T output)

Performs the following operation:

c = a^T * b^T
c_ij = ∑_k=1:n { a_ki * b_jk}

Parameters:

a - The left matrix in the multiplication operation. Not modified.

b - The right matrix in the multiplication operation. Not modified.

output - Where the results of the operation are stored. Modified.

multTransAB

public static <T extends DMatrix1Row> T multTransAB(double alpha,
 T a,
 T b,
 @Nullable
 T output)

Performs the following operation:

c = α * a^T * b^T
c_ij = α ∑_k=1:n { a_ki * b_jk}

Parameters:

alpha - Scaling factor.

a - The left matrix in the multiplication operation. Not modified.

b - The right matrix in the multiplication operation. Not modified.

output - Where the results of the operation are stored. Modified.

multAdd

public static void multAdd(DMatrix1Row a,
 DMatrix1Row b,
 DMatrix1Row c)

Performs the following operation:

c = c + a * b
c_ij = c_ij + ∑_k=1:n { a_ik * b_kj}

Parameters:

a - The left matrix in the multiplication operation. Not modified.

b - The right matrix in the multiplication operation. Not modified.

c - Where the results of the operation are stored. Modified.

multAdd

public static void multAdd(double alpha,
 DMatrix1Row a,
 DMatrix1Row b,
 DMatrix1Row c)

Performs the following operation:

c = c + α * a * b
c_ij = c_ij + α * ∑_k=1:n { a_ik * b_kj}

Parameters:

alpha - scaling factor.

a - The left matrix in the multiplication operation. Not modified.

b - The right matrix in the multiplication operation. Not modified.

c - Where the results of the operation are stored. Modified.

multAddTransA

public static void multAddTransA(DMatrix1Row a,
 DMatrix1Row b,
 DMatrix1Row c)

Performs the following operation:

c = c + a^T * b
c_ij = c_ij + ∑_k=1:n { a_ki * b_kj}

Parameters:

a - The left matrix in the multiplication operation. Not modified.

b - The right matrix in the multiplication operation. Not modified.

c - Where the results of the operation are stored. Modified.

multAddTransA

public static void multAddTransA(double alpha,
 DMatrix1Row a,
 DMatrix1Row b,
 DMatrix1Row c)

Performs the following operation:

c = c + α * a^T * b
c_ij =c_ij + α * ∑_k=1:n { a_ki * b_kj}

Parameters:

alpha - scaling factor

a - The left matrix in the multiplication operation. Not modified.

b - The right matrix in the multiplication operation. Not modified.

c - Where the results of the operation are stored. Modified.

multAddTransB

public static void multAddTransB(DMatrix1Row a,
 DMatrix1Row b,
 DMatrix1Row c)

Performs the following operation:

c = c + a * b^T
c_ij = c_ij + ∑_k=1:n { a_ik * b_jk}

Parameters:

a - The left matrix in the multiplication operation. Not modified.

b - The right matrix in the multiplication operation. Not modified.

c - Where the results of the operation are stored. Modified.

multAddTransB

public static void multAddTransB(double alpha,
 DMatrix1Row a,
 DMatrix1Row b,
 DMatrix1Row c)

Performs the following operation:

c = c + α * a * b^T
c_ij = c_ij + α * ∑_k=1:n { a_ik * b_jk}

Parameters:

alpha - Scaling factor.

a - The left matrix in the multiplication operation. Not modified.

b - The right matrix in the multiplication operation. Not modified.

c - Where the results of the operation are stored. Modified.

multAddTransAB

public static void multAddTransAB(DMatrix1Row a,
 DMatrix1Row b,
 DMatrix1Row c)

Performs the following operation:

c = c + a^T * b^T
c_ij = c_ij + ∑_k=1:n { a_ki * b_jk}

Parameters:

a - The left matrix in the multiplication operation. Not Modified.

b - The right matrix in the multiplication operation. Not Modified.

c - Where the results of the operation are stored. Modified.

multAddTransAB

public static void multAddTransAB(double alpha,
 DMatrix1Row a,
 DMatrix1Row b,
 DMatrix1Row c)

Performs the following operation:

c = c + α * a^T * b^T
c_ij = c_ij + α * ∑_k=1:n { a_ki * b_jk}

Parameters:

alpha - Scaling factor.

a - The left matrix in the multiplication operation. Not Modified.

b - The right matrix in the multiplication operation. Not Modified.

c - Where the results of the operation are stored. Modified.

transpose

public static void transpose(DMatrixRMaj mat)

Performs an "in-place" transpose.

For square matrices the transpose is truly in-place and does not require additional memory. For non-square matrices, internally a temporary matrix is declared and transpose(DMatrixRMaj, DMatrixRMaj) is invoked.

Parameters:

mat - The matrix that is to be transposed. Modified.

transpose

public static DMatrixRMaj transpose(DMatrixRMaj A,
 @Nullable
 @Nullable DMatrixRMaj A_tran)

Transposes matrix 'a' and stores the results in 'b':

b_ij = a_ji
where 'b' is the transpose of 'a'.

Parameters:

A - The original matrix. Not modified.

A_tran - Where the transpose is stored. If null a new matrix is created. Modified.

Returns:

The transposed matrix.