Package org.flag4j.operations.dense_sparse.csr.complex

Class ComplexCsrDenseMatrixMultiplication

java.lang.Object

org.flag4j.operations.dense_sparse.csr.complex.ComplexCsrDenseMatrixMultiplication

public final class ComplexCsrDenseMatrixMultiplication
extends Object

This class contains low-level implementations of complex-complex sparse-sparse matrix multiplication where the sparse matrices are in CSR format.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	ComplexCsrDenseMatrixMultiplication()

Method Summary

Modifier and Type	Method	Description
static CMatrix	standard(CMatrix src1, CsrCMatrix src2)	Computes the matrix multiplication between a complex dense matrix and a complex sparse CSR matrix.
static CMatrix	standard(CsrCMatrix src1, CMatrix src2)	Computes the matrix multiplication between a complex sparse CSR matrix and a complex dense matrix.
static CVector	standardVector(CsrCMatrix src1, CVector src2)	Computes the matrix-vector multiplication between a real sparse CSR matrix and a complex dense vector.

Methods inherited from class java.lang.Object

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

Constructor Details

ComplexCsrDenseMatrixMultiplication

private ComplexCsrDenseMatrixMultiplication()

Method Details

standard

public static CMatrix standard(CsrCMatrix src1,
 CMatrix src2)

Computes the matrix multiplication between a complex sparse CSR matrix and a complex dense matrix. WARNING: If the first matrix is very large but not very sparse, this method may be slower than converting the first matrix to a dense matrix and calling Matrix.mult(CMatrix).

Parameters:

src1 - First matrix in the matrix multiplication.

src2 - Second matrix in the matrix multiplication.

Returns:

The result of the matrix multiplication between src1 and src2.

Throws:

IllegalArgumentException - If src1 does not have the same number of columns as src2 has rows.

standard

public static CMatrix standard(CMatrix src1,
 CsrCMatrix src2)

Computes the matrix multiplication between a complex dense matrix and a complex sparse CSR matrix. WARNING: If the second matrix is very large but not very sparse, this method may be slower than converting the second matrix to a dense matrix and calling Matrix.mult(Matrix).

Parameters:

src1 - First matrix in the matrix multiplication (dense matrix).

src2 - Second matrix in the matrix multiplication (sparse CSR matrix).

Returns:

The result of the matrix multiplication between src1 and src2.

Throws:

IllegalArgumentException - If src1 does not have the same number of columns as src2 has rows.

standardVector

public static CVector standardVector(CsrCMatrix src1,
 CVector src2)

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

Parameters:

src1 - The matrix in the multiplication.

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

Returns:

The result of the matrix-vector multiplication.

Throws:

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