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java.lang.Objectorg.ujmp.core.doublematrix.impl.BlockMultiply
public class BlockMultiply
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 | |
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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 | |
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Void |
call()
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protected void |
multiply()
Multiply blocks of two matrices A,B and add to C. |
void |
multiplyRowMajorTimesColumnMajorBlocks(double[] aBlock,
double[] bBlock,
double[] cBlock,
int aRows,
int bRows,
int bCols)
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Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public BlockMultiply(BlockDenseDoubleMatrix2D a, BlockDenseDoubleMatrix2D b, BlockDenseDoubleMatrix2D c, int fromM, int toM, int fromN, int toN, int fromK, int toK)
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 AtoM
- - end row M in AfromN
- - start column N in A (or start row N in B)toN
- - end row NfromK
- - start column K in BtoK
- - end column K in BMethod Detail |
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public Void call()
call
in interface Callable<Void>
protected final void multiply()
Blocks of Matrix B are transformed to column-major layout (if not
already) to facilitate multiplication.
(If matrices have been created optimally, B should already be
column-major)
public void multiplyRowMajorTimesColumnMajorBlocks(double[] aBlock, double[] bBlock, double[] cBlock, int aRows, int bRows, int bCols)
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