bdm::fsqmat Class Reference

Fake sqmat. This class maps sqmat operations to operations on full matrix. More...

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Detailed Description

Fake sqmat. This class maps sqmat operations to operations on full matrix.

This class can be used to compare performance of algorithms using decomposed matrices with perormance of the same algorithms using full matrices;

#include <square_mat.h>

List of all members.

Public Member Functions
void	opupdt (const vec &v, double w)
mat	to_mat () const
	Conversion to full matrix.
void	mult_sym (const mat &C)
	Inplace symmetric multiplication by a SQUARE matrix , i.e. .
void	mult_sym_t (const mat &C)
	Inplace symmetric multiplication by a SQUARE transpose of matrix , i.e. .
void	mult_sym (const mat &C, fsqmat &U) const
	store result of mult_sym in external matrix
void	mult_sym_t (const mat &C, fsqmat &U) const
	store result of mult_sym_t in external matrix
void	clear ()
	Clearing matrix so that it corresponds to zeros.
	fsqmat ()
	Default initialization.
	fsqmat (const int dim0)
	Default initialization with proper size.
	fsqmat (const mat &M)
	Constructor.
	fsqmat (const fsqmat &M, const ivec &perm)
	fsqmat (const vec &d)
	Constructor.
virtual	~fsqmat ()
	Destructor for future use;.
void	inv (fsqmat &Inv) const
	Matrix inversion preserving the chosen form.
double	logdet () const
	Logarithm of a determinant.
double	qform (const vec &v) const
	Evaluates quadratic form ;.
double	invqform (const vec &v) const
	Evaluates quadratic form ;.
vec	sqrt_mult (const vec &v) const
	Multiplies square root of by vector .
void	add (const fsqmat &fsq2, double w=1.0)
	Add another matrix in fsq form with weight w.
void	setD (const vec &nD)
	Access functions.
vec	getD ()
	Access functions.
void	setD (const vec &nD, int i)
	Access functions.
fsqmat &	operator+= (const fsqmat &A)
	add another fsqmat matrix
fsqmat &	operator-= (const fsqmat &A)
	subtrack another fsqmat matrix
fsqmat &	operator*= (double x)
	multiply by a scalar
	operator mat & ()
	cast to normal mat
int	cols () const
	Reimplementing common functions of mat: cols().
int	rows () const
	Reimplementing common functions of mat: rows().
Protected Attributes
mat	M
	Full matrix on which the operations are performed.
int	dim
	dimension of the square matrix
Friends
std::ostream &	operator<< (std::ostream &os, const fsqmat &sq)
	print full matrix

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Constructor & Destructor Documentation

bdm::fsqmat::fsqmat	(	const fsqmat &	M,
		const ivec &	perm
	)			[inline]

Some templates require this constructor to compile, but it shouldn't actually be called.

References bdm_error.

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Member Function Documentation

void bdm::fsqmat::inv

(

fsqmat &

Inv

)

const

Matrix inversion preserving the chosen form.

Parameters:

Inv

a space where the inverse is stored.

References M.

Referenced by bdm::egiw::evallog_nn().

void bdm::fsqmat::mult_sym

(

const mat &

C

)

[virtual]

Inplace symmetric multiplication by a SQUARE matrix , i.e. .

Parameters:

C

multiplying matrix,

Implements bdm::sqmat.

References M.

void bdm::fsqmat::mult_sym_t

(

const mat &

C

)

[virtual]

Inplace symmetric multiplication by a SQUARE transpose of matrix , i.e. .

Parameters:

C

multiplying matrix,

Implements bdm::sqmat.

References M.

void bdm::fsqmat::opupdt	(	const vec &	v,
		double	w
	)			[virtual]

Perfroms a rank-1 update by outer product of vectors: .

Parameters:

	v	Vector forming the outer product to be added
	w	weight of updating; can be negative

BLAS-2b operation.

Implements bdm::sqmat.

References M.

vec bdm::fsqmat::sqrt_mult

(

const vec &

v

)

const [inline, virtual]

Multiplies square root of by vector .

Used e.g. in generating normal samples.

Implements bdm::sqmat.

References M.

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The documentation for this class was generated from the following files:

• square_mat.h
• square_mat.cpp