ladel_scale.h File Reference

Detailed Description

Routines to scale the columns and rows of a matrix, or the whole matrix itself.

Author

Ben Hermans

This also includes routines to compute the row-wise and column-wise infinity norms.

Definition in file ladel_scale.h.

#include "ladel_types.h"

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Functions
void	ladel_scale_columns (ladel_sparse_matrix *M, const ladel_double *S)
	Scales the columns of M with the scalars in S, that is \(M(:,i) = S(i)*M(:,i)\). More...
void	ladel_scale_rows (ladel_sparse_matrix *M, const ladel_double *S)
	Scales the rows of M with the scalars in S, that is \(M(i,:) = S(i)*M(i,:)\). More...
void	ladel_scale_scalar (ladel_sparse_matrix *M, ladel_double s)
	Scales the elements of M with s, that is \(M = sM\). More...
void	ladel_infinity_norm_columns (ladel_sparse_matrix *M, ladel_double *norms)
	Computes the column-wise infinity norms, that is \(norms(i) = norm(M(:,i), inf)\). More...
void	ladel_infinity_norm_rows (ladel_sparse_matrix *M, ladel_double *norms)
	Computes the row-wise infinity norms, that is \(norms(i) = norm(M(i,:), inf)\). More...

Function Documentation

ladel_infinity_norm_columns()

void ladel_infinity_norm_columns	(	ladel_sparse_matrix *	M,
		ladel_double *	norms
	)

Computes the column-wise infinity norms, that is \(norms(i) = norm(M(:,i), inf)\).

Parameters

M	Matrix
norms	Output vector of infinity norms

Definition at line 28 of file ladel_scale.c.

ladel_infinity_norm_rows()

void ladel_infinity_norm_rows	(	ladel_sparse_matrix *	M,
		ladel_double *	norms
	)

Computes the row-wise infinity norms, that is \(norms(i) = norm(M(i,:), inf)\).

Parameters

M	Matrix
norms	Output vector of infinity norms

Definition at line 40 of file ladel_scale.c.

ladel_scale_columns()

void ladel_scale_columns	(	ladel_sparse_matrix *	M,
		const ladel_double *	S
	)

Scales the columns of M with the scalars in S, that is \(M(:,i) = S(i)*M(:,i)\).

Parameters

M	Matrix
S	Array with scale factors for the columns

Definition at line 6 of file ladel_scale.c.

ladel_scale_rows()

void ladel_scale_rows	(	ladel_sparse_matrix *	M,
		const ladel_double *	S
	)

Scales the rows of M with the scalars in S, that is \(M(i,:) = S(i)*M(i,:)\).

Parameters

M	Matrix
S	Array with scale factors for the rows

Definition at line 14 of file ladel_scale.c.

ladel_scale_scalar()

void ladel_scale_scalar	(	ladel_sparse_matrix *	M,
		ladel_double	s
	)

Scales the elements of M with s, that is \(M = sM\).

Parameters

M	Matrix
s	Scaling factor

Definition at line 21 of file ladel_scale.c.