ladel_matvec.h File Reference

Detailed Description

Routines to compute matrix vector products.

Author

Ben Hermans

Definition in file ladel_matvec.h.

#include "ladel_global.h"
#include "ladel_types.h"

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Functions
void	ladel_matvec (const ladel_sparse_matrix *M, const ladel_double *x, ladel_double *y, ladel_int reset)
	Computes \(y = Mx\) or \(y += Mx\) (for reset==TRUE of FALSE respectively). More...
void	ladel_tpose_matvec (const ladel_sparse_matrix *M, const ladel_double *x, ladel_double *y, ladel_int reset)
	Computes \(y = M^Tx\) or \(y += M^Tx\) (for reset==TRUE of FALSE respectively). More...
void	ladel_symmetric_matvec (const ladel_sparse_matrix *M, const ladel_double *x, ladel_double *y, ladel_int reset)
	Computes (for a symmetric matrix M) \(y = Mx\) or \(y += Mx\) (for reset==TRUE of FALSE respectively). More...

Function Documentation

ladel_matvec()

void ladel_matvec	(	const ladel_sparse_matrix *	M,
		const ladel_double *	x,
		ladel_double *	y,
		ladel_int	reset
	)

Computes \(y = Mx\) or \(y += Mx\) (for reset==TRUE of FALSE respectively).

Parameters

M	Matrix
x	Vector
y	Resulting matrix vector product
reset	If TRUE, y is first set to zero before adding \(Mx\)

Definition at line 5 of file ladel_matvec.c.

ladel_symmetric_matvec()

void ladel_symmetric_matvec	(	const ladel_sparse_matrix *	M,
		const ladel_double *	x,
		ladel_double *	y,
		ladel_int	reset
	)

Computes (for a symmetric matrix M) \(y = Mx\) or \(y += Mx\) (for reset==TRUE of FALSE respectively).

Parameters

M	Symmetric Matrix (M->symmetry==UPPER or LOWER)
x	Vector
y	Resulting matrix vector product
reset	If TRUE, y is first set to zero before adding \(Mx\)

Definition at line 27 of file ladel_matvec.c.

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ladel_tpose_matvec()

void ladel_tpose_matvec	(	const ladel_sparse_matrix *	M,
		const ladel_double *	x,
		ladel_double *	y,
		ladel_int	reset
	)

Computes \(y = M^Tx\) or \(y += M^Tx\) (for reset==TRUE of FALSE respectively).

Parameters

M	Matrix
x	Vector
y	Resulting matrix vector product
reset	If TRUE, y is first set to zero before adding \(M^Tx\)

Definition at line 16 of file ladel_matvec.c.

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