scamac_matop.h File Reference

Sparse matrix creation and manipulation. More...

#include "scamac_vector.h"
#include "scamac_generator.h"
#include "scamac_sparsemat.h"
#include <complex.h>

Go to the source code of this file.

Functions
ScamacErrorCode	scamac_matop_from_generator (const ScamacGenerator *gen, ScamacMatop **sm)
	Create matop. More...
ScamacErrorCode	scamac_matop_from_matrix (const ScamacMatrix *mat, ScamacMatop **sm)
	Obtain matop from ScaMaC sparse matrix.
ScamacErrorCode	scamac_matop_free (ScamacMatop *sm)
	Free allocated matop.
ScamacErrorCode	scamac_matop_mvm (const ScamacMatop *sm, const ScamacVector *x, ScamacVector *y, double alpha, double beta, double gamma)
	Sparse matrix-vector multiplication: y = alpha SM x + beta y + gamma x. More...
ScamacErrorCode	scamac_matop_mvm_cplx (const ScamacMatop *sm, const ScamacVector *x, ScamacVector *y, double complex alpha, double complex beta, double complex gamma)
	Complex sparse matrix-vector multiplication: y = alpha SM x + beta y + gamma x. More...

Detailed Description

Sparse matrix creation and manipulation.

Author

Andreas Alvermann (University of Greifswald)

Date

October 2017 — today

Function Documentation

scamac_matop_from_generator()

ScamacErrorCode scamac_matop_from_generator	(	const ScamacGenerator *	gen,
		ScamacMatop **	sm
	)

Create matop.

Obtain matop from ScaMaC generator

scamac_matop_mvm()

ScamacErrorCode scamac_matop_mvm	(	const ScamacMatop *	sm,
		const ScamacVector *	x,
		ScamacVector *	y,
		double	alpha,
		double	beta,
		double	gamma
	)

Sparse matrix-vector multiplication: y = alpha SM x + beta y + gamma x.

Note

There is little information in declaring *x "const" - it should simply be understood as a reminder that this vector view is not changed

scamac_matop_mvm_cplx()

ScamacErrorCode scamac_matop_mvm_cplx	(	const ScamacMatop *	sm,
		const ScamacVector *	x,
		ScamacVector *	y,
		double complex	alpha,
		double complex	beta,
		double complex	gamma
	)

Complex sparse matrix-vector multiplication: y = alpha SM x + beta y + gamma x.

Note

Requires complex vectors x,y, but accepts real and complex matrix sm