ladel_matmat.h File Reference

Detailed Description

Routines to compute matrix matrix products. For now only \(MM^T\) and \(M\Sigma M^T\), with \(\Sigma\) a diagonal matrix, are supported.

Author

Ben Hermans

Definition in file ladel_matmat.h.

#include "ladel_types.h"

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Functions
ladel_sparse_matrix *	ladel_mat_mat_transpose (const ladel_sparse_matrix *M, const ladel_sparse_matrix *M_transpose, ladel_work *work)
	Computes \(MM^T\). More...
ladel_sparse_matrix *	ladel_mat_mat_transpose_pattern (const ladel_sparse_matrix *M, const ladel_sparse_matrix *M_transpose, ladel_work *work)
	Computes the pattern of \(MM^T\). More...
ladel_sparse_matrix *	ladel_mat_diag_mat_transpose (const ladel_sparse_matrix *M, const ladel_sparse_matrix *M_transpose, const ladel_double *diag, ladel_work *work)
	Computes \(M\Sigma M^T\). More...
ladel_sparse_matrix *	ladel_mat_mat_transpose_advanced (const ladel_sparse_matrix *M, const ladel_sparse_matrix *M_transpose, const ladel_double *diag, ladel_int values, ladel_work *work)
	Core mat_mat_transpose function with all options (diag and value/pattern). More...

Function Documentation

ladel_mat_diag_mat_transpose()

ladel_sparse_matrix * ladel_mat_diag_mat_transpose	(	const ladel_sparse_matrix *	M,
		const ladel_sparse_matrix *	M_transpose,
		const ladel_double *	diag,
		ladel_work *	work
	)

Computes \(M\Sigma M^T\).

Parameters

M	Matrix
M_transpose	The transpose of M
diag	Array containing the diagonal of \(\Sigma\)
work	LADEL workspace

Definition at line 17 of file ladel_matmat.c.

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ladel_mat_mat_transpose()

ladel_sparse_matrix * ladel_mat_mat_transpose	(	const ladel_sparse_matrix *	M,
		const ladel_sparse_matrix *	M_transpose,
		ladel_work *	work
	)

Computes \(MM^T\).

Parameters

M	Matrix
M_transpose	The transpose of M
work	LADEL workspace

Returns

\(MM^T\)

Definition at line 7 of file ladel_matmat.c.

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ladel_mat_mat_transpose_advanced()

ladel_sparse_matrix * ladel_mat_mat_transpose_advanced	(	const ladel_sparse_matrix *	M,
		const ladel_sparse_matrix *	M_transpose,
		const ladel_double *	diag,
		ladel_int	values,
		ladel_work *	work
	)

Core mat_mat_transpose function with all options (diag and value/pattern).

Note

If values==FALSE, only the pattern of \(MM^T\). Setting diag=NULL, then \(\Sigma = I\) is assumed.

Parameters

M	Matrix
M_transpose	Transpose of M
diag	Array containing the diagonal of \(\Sigma\). If NULL, \(\Sigma = I\).
values	Values or pattern computation
work	LADEL workspace

Definition at line 22 of file ladel_matmat.c.

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ladel_mat_mat_transpose_pattern()

ladel_sparse_matrix * ladel_mat_mat_transpose_pattern	(	const ladel_sparse_matrix *	M,
		const ladel_sparse_matrix *	M_transpose,
		ladel_work *	work
	)

Computes the pattern of \(MM^T\).

Parameters

M	Matrix
M_transpose	The transpose of M
work	LADEL workspace

Returns

The patter of \(MM^T\)

Definition at line 12 of file ladel_matmat.c.

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