java.lang.Object
- org.ejml.dense.block.InnerRankUpdate_FDRB

```
public class InnerRankUpdate_FDRB
extends java.lang.Object
```
Performs rank-n update operations on the inner blocks of a FMatrixRBlock It is assumed and not checked that the submatrices are aligned along the matrix's blocks.

Constructor Summary

Constructors
Constructor Description

InnerRankUpdate_FDRB()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`protected static void`	`multTransABlockMinus(float[] dataA, float[] dataC, int indexA, int indexB, int indexC, int heightA, int widthA, int widthC)`	Performs the following operation on a block: c = c - a^Ta
`protected static void`	`multTransABlockMinus_U(float[] dataA, float[] dataC, int indexA, int indexB, int indexC, int heightA, int widthA, int widthC)`	Performs the following operation on the upper triangular portion of a block: c = c - a^Ta
`protected static void`	`multTransBBlockMinus(float[] dataA, float[] dataC, int indexA, int indexB, int indexC, int widthA, int heightA, int widthC)`	Performs the following operation on a block: c = c - a*a^T
`protected static void`	`multTransBBlockMinus_L(float[] dataA, float[] dataC, int indexA, int indexB, int indexC, int widthA, int heightA, int widthC)`	Performs the following operation on the lower triangular portion of a block: c = c - a*a^T
`static void`	`rankNUpdate(int blockLength, float alpha, org.ejml.data.FSubmatrixD1 A, org.ejml.data.FSubmatrixD1 B)`	Performs: A = A + α B ^TB
`static void`	`symmRankNMinus_L(int blockLength, org.ejml.data.FSubmatrixD1 A, org.ejml.data.FSubmatrixD1 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
`static void`	`symmRankNMinus_U(int blockLength, org.ejml.data.FSubmatrixD1 A, org.ejml.data.FSubmatrixD1 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 Detail
- InnerRankUpdate_FDRB
```
public InnerRankUpdate_FDRB()
```

Method Detail

rankNUpdate

public static void rankNUpdate(int blockLength,
                               float alpha,
                               org.ejml.data.FSubmatrixD1 A,
                               org.ejml.data.FSubmatrixD1 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,
                                    org.ejml.data.FSubmatrixD1 A,
                                    org.ejml.data.FSubmatrixD1 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,
                                    org.ejml.data.FSubmatrixD1 A,
                                    org.ejml.data.FSubmatrixD1 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

multTransABlockMinus

protected static void multTransABlockMinus(float[] dataA,
                                           float[] dataC,
                                           int indexA,
                                           int indexB,
                                           int indexC,
                                           int heightA,
                                           int widthA,
                                           int widthC)

Performs the following operation on a block:

c = c - a^Ta

multTransABlockMinus_U

protected static void multTransABlockMinus_U(float[] dataA,
                                             float[] dataC,
                                             int indexA,
                                             int indexB,
                                             int indexC,
                                             int heightA,
                                             int widthA,
                                             int widthC)

Performs the following operation on the upper triangular portion of a block:

c = c - a^Ta

multTransBBlockMinus

protected static void multTransBBlockMinus(float[] dataA,
                                           float[] dataC,
                                           int indexA,
                                           int indexB,
                                           int indexC,
                                           int widthA,
                                           int heightA,
                                           int widthC)

Performs the following operation on a block:

c = c - a*a^T

multTransBBlockMinus_L

protected static void multTransBBlockMinus_L(float[] dataA,
                                             float[] dataC,
                                             int indexA,
                                             int indexB,
                                             int indexC,
                                             int widthA,
                                             int heightA,
                                             int widthC)

Performs the following operation on the lower triangular portion of a block:

c = c - a*a^T

Class InnerRankUpdate_FDRB

Constructor Summary