org.ujmp.core.doublematrix.impl

Class BlockMultiply

java.lang.Object

org.ujmp.core.doublematrix.impl.BlockMultiply

All Implemented Interfaces:

java.util.concurrent.Callable<java.lang.Void>

public class BlockMultiply
extends java.lang.Object
implements java.util.concurrent.Callable<java.lang.Void>

Multiply blocks of A and B in the specified range(fromM->toM, fromN->toN, fromK->toK),
and add to matrix C.

C(fromM->toM, fromK->toK) +=
A(fromM->toM, fromN->toN) x B(fromN->toN, fromK->toK)

All blocks must be square blocks of the same size, with length of one side = blockStripeSize

Constructor Summary

Constructors

Constructor and Description
BlockMultiply(BlockDenseDoubleMatrix2D a, BlockDenseDoubleMatrix2D b, BlockDenseDoubleMatrix2D c, int fromM, int toM, int fromN, int toN, int fromK, int toK) Constructor taking the two matrices being multiplied, the target matrix C and the range of rows and columns to multiply.

Method Summary

Modifier and Type	Method and Description
java.lang.Void	call()
void	multiplyRowMajorTimesColumnMajorBlocks(double[] aBlock, double[] bBlock, double[] cBlock, int aRows, int bRows, int bCols)

Methods inherited from class java.lang.Object

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

Constructor Detail

BlockMultiply

public BlockMultiply(BlockDenseDoubleMatrix2D a,
                     BlockDenseDoubleMatrix2D b,
                     BlockDenseDoubleMatrix2D c,
                     int fromM,
                     int toM,
                     int fromN,
                     int toN,
                     int fromK,
                     int toK)

Constructor taking the two matrices being multiplied, the target matrix C and the range of rows and columns to multiply.

Parameters:

a - - matrix A, size (M, N)

b - - matrix B, size (N, K)

c - - result matrix C, size (M, K)

fromM - - start row M in matrix A

toM - - end row M in A

fromN - - start column N in A (or start row N in B)

toN - - end row N

fromK - - start column K in B

toK - - end column K in B

Method Detail

call

public java.lang.Void call()

Specified by:

call in interface java.util.concurrent.Callable<java.lang.Void>

multiplyRowMajorTimesColumnMajorBlocks

public void multiplyRowMajorTimesColumnMajorBlocks(double[] aBlock,
                                                   double[] bBlock,
                                                   double[] cBlock,
                                                   int aRows,
                                                   int bRows,
                                                   int bCols)