Package org.flag4j.operations.sparse.csr.real_complex

Class RealComplexCsrMatrixMultiplication

java.lang.Object

org.flag4j.operations.sparse.csr.real_complex.RealComplexCsrMatrixMultiplication

public final class RealComplexCsrMatrixMultiplication
extends Object

This class provides low-level implementation of matrix multiplication between a real CSR matrix and a complex CSR matrix.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	RealComplexCsrMatrixMultiplication()

Method Summary

Modifier and Type	Method	Description
static CMatrix	standard(CsrCMatrix src1, CsrMatrix src2)	Computes the matrix multiplication between two sparse CSR matrices.
static CMatrix	standard(CsrMatrix src1, CsrCMatrix src2)	Computes the matrix multiplication between two sparse CSR matrices.
static CsrCMatrix	standardAsSparse(CsrCMatrix src1, CsrMatrix src2)	Computes the matrix multiplication between two sparse CSR matrices and returns the result as a sparse matrix.
static CsrCMatrix	standardAsSparse(CsrMatrix src1, CsrCMatrix src2)	Computes the matrix multiplication between two sparse CSR matrices and returns the result as a sparse matrix.
static CVector	standardVector(CsrCMatrix src1, CooVector src2)	Computes the matrix-vector multiplication between a real sparse CSR matrix and a complex sparse COO vector.
static CVector	standardVector(CsrMatrix src1, CooCVector src2)	Computes the matrix-vector multiplication between a real sparse CSR matrix and a complex sparse COO vector.

Methods inherited from class java.lang.Object

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

Constructor Details

RealComplexCsrMatrixMultiplication

private RealComplexCsrMatrixMultiplication()

Method Details

standard

public static CMatrix standard(CsrMatrix src1,
 CsrCMatrix src2)

Computes the matrix multiplication between two sparse CSR matrices. The result is a dense matrix.

Parameters:

src1 - First CSR matrix in the multiplication.

src2 - Second CSR matrix in the multiplication.

Returns:

Entries of the dense matrix resulting from the matrix multiplication of the two sparse CSR matrices.

standard

public static CMatrix standard(CsrCMatrix src1,
 CsrMatrix src2)

Computes the matrix multiplication between two sparse CSR matrices. The result is a dense matrix.

Parameters:

src1 - First CSR matrix in the multiplication.

src2 - Second CSR matrix in the multiplication.

Returns:

Entries of the dense matrix resulting from the matrix multiplication of the two sparse CSR matrices.

standardAsSparse

public static CsrCMatrix standardAsSparse(CsrMatrix src1,
 CsrCMatrix src2)

Computes the matrix multiplication between two sparse CSR matrices and returns the result as a sparse matrix.
Warning: This method may be slower than standard(CsrMatrix, CsrCMatrix) if the result of multiplying this matrix with src2 is not very sparse. Further, multiplying two sparse matrices (even very sparse matrices) may result in a dense matrix so this method should be used with caution.

Parameters:

src1 - First CSR matrix in the multiplication.

src2 - Second CSR matrix in the multiplication.

Returns:

Sparse CSR matrix resulting from the matrix multiplication of the two sparse CSR matrices.

standardAsSparse

public static CsrCMatrix standardAsSparse(CsrCMatrix src1,
 CsrMatrix src2)

Computes the matrix multiplication between two sparse CSR matrices and returns the result as a sparse matrix.
Warning: This method may be slower than standard(CsrCMatrix, CsrMatrix) if the result of multiplying this matrix with src2 is not very sparse. Further, multiplying two sparse matrices (even very sparse matrices) may result in a dense matrix so this method should be used with caution.

Parameters:

src1 - First CSR matrix in the multiplication.

src2 - Second CSR matrix in the multiplication.

Returns:

Sparse CSR matrix resulting from the matrix multiplication of the two sparse CSR matrices.

standardVector

public static CVector standardVector(CsrMatrix src1,
 CooCVector src2)

Computes the matrix-vector multiplication between a real sparse CSR matrix and a complex sparse COO vector.

Parameters:

src1 - The matrix in the multiplication.

src2 - Vector in multiplication. Treated as a column vector in COO format.

Returns:

The result of the matrix-vector multiplication.

Throws:

IllegalArgumentException - If the number of columns in src1 does not equal the number of columns in src2.

standardVector

public static CVector standardVector(CsrCMatrix src1,
 CooVector src2)

Computes the matrix-vector multiplication between a real sparse CSR matrix and a complex sparse COO vector.

Parameters:

src1 - The matrix in the multiplication.

src2 - Vector in multiplication. Treated as a column vector in COO format.

Returns:

The result of the matrix-vector multiplication.

Throws:

IllegalArgumentException - If the number of columns in src1 does not equal the number of columns in src2.