Class RealDenseMatrixMultiplyDispatcher

java.lang.Object

org.flag4j.linalg.ops.RealDenseMatrixMultiplyDispatcher

public final class RealDenseMatrixMultiplyDispatcher
extends Object

Singleton class which stores a map of all viable real dense matrix multiply algorithms and uses that map to dispatch a real dense matrix multiply problem to the appropriate algorithm.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static enum	RealDenseMatrixMultiplyDispatcher.AlgorithmNames	Simple enum class containing all possible choices of real dense matrix multiply algorithms.

Method Summary

Modifier and Type	Method	Description
static double[]	dispatch(double[] src1, Shape shape1, double[] src2, Shape shape2)	Dispatches a matrix multiply problem to the appropriate algorithm based on the size of the matrices.
static double[]	dispatch(Matrix A, Matrix B)	Dispatches a matrix multiply problem to the appropriate algorithm based on the size of the matrices.
static double[]	dispatchTranspose(Matrix A, Matrix B)	Dispatches a matrix multiply-transpose problem equivalent to A.mult(B.T()) to the appropriate algorithm based on the size of the matrices.
static RealDenseMatrixMultiplyDispatcher	getInstance()	Gets the singleton instance of this class.

Methods inherited from class java.lang.Object

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

Method Details

getInstance

public static RealDenseMatrixMultiplyDispatcher getInstance()

Gets the singleton instance of this class. If this class has not been instanced, a new instance will be created.

Returns:

The singleton instance of this class.

dispatch

public static double[] dispatch(Matrix A,
 Matrix B)

Dispatches a matrix multiply problem to the appropriate algorithm based on the size of the matrices.

Parameters:

A - First matrix in the multiplication.

B - Second matrix in the multiplication.

Returns:

The result of the matrix multiplication.

dispatch

public static double[] dispatch(double[] src1,
 Shape shape1,
 double[] src2,
 Shape shape2)

Dispatches a matrix multiply problem to the appropriate algorithm based on the size of the matrices.

Parameters:

src1 - Entries of the first matrix.

shape1 - Shape of the first matrix.

src2 - Entries of the second matrix.

shape2 - Shape of the second matrix.

Returns:

The result of the matrix multiplication.

dispatchTranspose

public static double[] dispatchTranspose(Matrix A,
 Matrix B)

Dispatches a matrix multiply-transpose problem equivalent to A.mult(B.T()) to the appropriate algorithm based on the size of the matrices.

Parameters:

A - First matrix in the multiplication.

B - Second matrix in the multiplication and the matrix to transpose.

Returns:

The matrix multiply-transpose result of A and B.