Package org.ejml.dense.block

Class InnerRankUpdate_MT_DDRB

java.lang.Object

org.ejml.dense.block.InnerRankUpdate_MT_DDRB

@Generated("org.ejml.dense.block.InnerRankUpdate_DDRB")
public class InnerRankUpdate_MT_DDRB
extends Object

Performs rank-n update operations on the inner blocks of a DMatrixRBlock It is assumed and not checked that the submatrices are aligned along the matrix's blocks.

Constructor Summary

Constructors

Constructor	Description
InnerRankUpdate_MT_DDRB()

Method Summary

Modifier and Type	Method	Description
static void	rankNUpdate(int blockLength, double alpha, DSubmatrixD1 A, DSubmatrixD1 B)	Performs: A = A + α B TB
static void	symmRankNMinus_L(int blockLength, DSubmatrixD1 A, DSubmatrixD1 B)	Rank N update function for a symmetric inner submatrix and only operates on the lower triangular portion of the submatrix. A = A - B*BT
static void	symmRankNMinus_U(int blockLength, DSubmatrixD1 A, DSubmatrixD1 B)	Rank N update function for a symmetric inner submatrix and only operates on the upper triangular portion of the submatrix. A = A - B TB

Methods inherited from class java.lang.Object

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

Constructor Details

InnerRankUpdate_MT_DDRB

public InnerRankUpdate_MT_DDRB()

Method Details

rankNUpdate

public static void rankNUpdate(int blockLength,
 double alpha,
 DSubmatrixD1 A,
 DSubmatrixD1 B)

Performs:

A = A + α B ^TB

Parameters:

blockLength - Size of the block in the block matrix.

alpha - scaling factor for right hand side.

A - Block aligned submatrix.

B - Block aligned submatrix.

symmRankNMinus_U

public static void symmRankNMinus_U(int blockLength,
 DSubmatrixD1 A,
 DSubmatrixD1 B)

Rank N update function for a symmetric inner submatrix and only operates on the upper triangular portion of the submatrix.

A = A - B ^TB

symmRankNMinus_L

public static void symmRankNMinus_L(int blockLength,
 DSubmatrixD1 A,
 DSubmatrixD1 B)

Rank N update function for a symmetric inner submatrix and only operates on the lower triangular portion of the submatrix.

A = A - B*B^T