EigenSolver for complex, standard eigenproblems. More...

#include <arpackpp.hh>

Inheritance diagram for eigensolver::ArPackppStd< T >:

Public Member Functions
	ArPackppStd (concepts::Operator< T > &OP, int kmax=1, char which=(char ) "LM", Real tol=0.0, int maxiter=300)
	Regular mode constructor. More...

	ArPackppStd (concepts::Operator< T > &OP, int kmax=1, concepts::Cmplx sigma=0.0, Real tol=0.0, int maxiter=300)
	Shift and invert mode constructor. More...

virtual uint	converged () const
	Returns the number of converged eigenpairs. More...

virtual uint	converged () const=0
	Returns the number of converged eigen pairs. More...

virtual concepts::Array< concepts::Vector< Cmplx > * > &	getEF ()
	Getter for the computed eigenvectors. More...

virtual const concepts::Array< Cmplx > &	getEV ()
	Getter for the computed eigenvalues. More...

concepts::Array< Cmplx >	getRESID ()
	Returns the RESID vector. More...

virtual uint	iterations () const
	Returns the actual number of Arnoldi iterations. More...

virtual uint	iterations () const=0
	Returns the number of iterations. More...

virtual	~ArPackppStd ()
	Deconstructor. More...

Protected Member Functions
virtual std::ostream &	info (std::ostream &os) const
	Returns information in an output stream. More...

Private Member Functions
void	compute_ ()
	Computes and stores the eigenpairs. More...

Private Attributes
ArpackStdOperatorWrapper< T >	aow_
	Wrapper. More...

ARCompStdEig< Real, ArpackStdOperatorWrapper< T > >	arpackSolver_
	Arpack solver. More...

bool	computed_
	Whether or not eigenpairs have already been computed. More...

uint	convEigenvalues_
	Number of converged eigenpairs. More...

concepts::Array< Cmplx >	eigenValues_
	References into storage for eigenvalues. More...

concepts::Array< concepts::Vector< Cmplx > * >	eigenVectors_
	References into storage for eigenvectors. More...

uint	iter_
	Number of Arnoldi iterations. More...

ArPack< Real >::modus	modus_
	Mode of the Arpack solver. More...

char *	whichEV_
	Identifier indicating which eigenvalues should be calculated. More...

Detailed Description

template<class T>
class eigensolver::ArPackppStd< T >

EigenSolver for complex, standard eigenproblems.

Solves problems of the form $A x = \lambda x$ with complex-valued matrix A.

Definition at line 161 of file arpackpp.hh.

Constructor & Destructor Documentation

◆ ArPackppStd() [1/2]

template<class T >

eigensolver::ArPackppStd< T >::ArPackppStd	(	concepts::Operator< T > &	OP,
		int	kmax = `1`,
		concepts::Cmplx	sigma = `0.0`,
		Real	tol = `0.0`,
		int	maxiter = `300`
	)

inline

Shift and invert mode constructor.

Parameters

OP	multiplication operator, OP * x = inv(A-sigmaId) x
kmax	number of eigenpairs to be computed, default 1
sigma	complex-valued shift for the shift-invert mode, default 0.0
tol	convergence tolerance for the eigenpairs, default 0.0 (is replaced by LAPACK's `DLAMCH`('EPS'))
maxiter	maximum number of Arnoldi iterations allowed, default 300

Warning: kmax has to be larger than or equal to 1 and smaller than or equal to the dimension of the matrix minus 2.

Definition at line 174 of file arpackpp.hh.

◆ ArPackppStd() [2/2]

template<class T >

eigensolver::ArPackppStd< T >::ArPackppStd	(	concepts::Operator< T > &	OP,
		int	kmax = `1`,
		char *	which = `(char*) "LM"`,
		Real	tol = `0.0`,
		int	maxiter = `300`
	)

inline

Regular mode constructor.

Parameters

OP	multiplication operator, OP * x = A * x
kmax	number of eigenpairs to be computed, default 1
which	defines which sort of eigenvalues should be computed, i.e. eigenvalues of largest magnitude ("LM"), smallest magnitude ("SM"), largest real part ("LR"), smallest real part ("SR"), largest imaginary part ("LI") or smallest imaginary part ("SI"), default "LM"
tol	convergence tolerance for the eigenpairs, default 0.0 (is replaced by LAPACK's `DLAMCH`('EPS'))
maxiter	maximum number of Arnoldi iterations, default 300

Warning: kmax has to be larger than or equal to 1 and smaller than or equal to the dimension of the matrix minus 2.

Definition at line 206 of file arpackpp.hh.

◆ ~ArPackppStd()

template<class T >

virtual eigensolver::ArPackppStd< T >::~ArPackppStd ( )

inlinevirtual

Deconstructor.

Definition at line 225 of file arpackpp.hh.

Member Function Documentation

◆ compute_()

template<class T >

void eigensolver::ArPackppStd< T >::compute_ ( )

inlineprivate

Computes and stores the eigenpairs.

Definition at line 292 of file arpackpp.hh.

◆ converged() [1/2]

template<class T >

virtual uint eigensolver::ArPackppStd< T >::converged ( ) const

inlinevirtual

Returns the number of converged eigenpairs.

Definition at line 258 of file arpackpp.hh.

◆ converged() [2/2]

virtual uint eigensolver::EigenSolver< concepts::Cmplx >::converged ( ) const

pure virtualinherited

Returns the number of converged eigen pairs.

Implemented in eigensolver::ArPackppGen< typename eigensolver::OperatorType< F, concepts::Real >::type, F, concepts::Real >, eigensolver::ArPackppStd< typename eigensolver::OperatorType< Cmplx, Real >::type >, and eigensolver::ArPackppStd< F >.

◆ getEF()

template<class T >

virtual concepts::Array<concepts::Vector<Cmplx>*>& eigensolver::ArPackppStd< T >::getEF ( )

inlinevirtual

Getter for the computed eigenvectors.

Computes eigenvalues and eigenvectors if they have not yet been computed.

Implements eigensolver::EigenSolver< concepts::Cmplx >.

Definition at line 246 of file arpackpp.hh.

◆ getEV()

template<class T >

virtual const concepts::Array<Cmplx>& eigensolver::ArPackppStd< T >::getEV ( )

inlinevirtual

Getter for the computed eigenvalues.

Computes eigenvalues and eigenvectors if they have not yet been computed.

Implements eigensolver::EigenSolver< concepts::Cmplx >.

Definition at line 235 of file arpackpp.hh.

◆ getRESID()

template<class T >

concepts::Array<Cmplx> eigensolver::ArPackppStd< T >::getRESID ( )

inline

Returns the RESID vector.

Definition at line 263 of file arpackpp.hh.

◆ info()

template<class T >

virtual std::ostream& eigensolver::ArPackppStd< T >::info ( std::ostream & os ) const

inlineprotectedvirtual

Returns information in an output stream.

Reimplemented from eigensolver::EigenSolver< concepts::Cmplx >.

Definition at line 271 of file arpackpp.hh.

◆ iterations() [1/2]

template<class T >

virtual uint eigensolver::ArPackppStd< T >::iterations ( ) const

inlinevirtual

Returns the actual number of Arnoldi iterations.

Definition at line 253 of file arpackpp.hh.

◆ iterations() [2/2]

virtual uint eigensolver::EigenSolver< concepts::Cmplx >::iterations ( ) const

pure virtualinherited

Returns the number of iterations.

Implemented in eigensolver::ArPackppGen< typename eigensolver::OperatorType< F, concepts::Real >::type, F, concepts::Real >, eigensolver::ArPackppStd< typename eigensolver::OperatorType< Cmplx, Real >::type >, and eigensolver::ArPackppStd< F >.

Member Data Documentation

◆ aow_

template<class T >

ArpackStdOperatorWrapper<T> eigensolver::ArPackppStd< T >::aow_

private

Wrapper.

Definition at line 321 of file arpackpp.hh.

◆ arpackSolver_

template<class T >

ARCompStdEig<Real, ArpackStdOperatorWrapper<T> > eigensolver::ArPackppStd< T >::arpackSolver_

private

Arpack solver.

Definition at line 324 of file arpackpp.hh.

◆ computed_

template<class T >

bool eigensolver::ArPackppStd< T >::computed_

private

Whether or not eigenpairs have already been computed.

Definition at line 333 of file arpackpp.hh.

◆ convEigenvalues_

template<class T >

uint eigensolver::ArPackppStd< T >::convEigenvalues_

private

Number of converged eigenpairs.

Definition at line 330 of file arpackpp.hh.

◆ eigenValues_

template<class T >

concepts::Array<Cmplx> eigensolver::ArPackppStd< T >::eigenValues_

private

References into storage for eigenvalues.

Definition at line 336 of file arpackpp.hh.

◆ eigenVectors_

template<class T >

concepts::Array<concepts::Vector<Cmplx>*> eigensolver::ArPackppStd< T >::eigenVectors_

private

References into storage for eigenvectors.

Definition at line 339 of file arpackpp.hh.

◆ iter_

template<class T >

uint eigensolver::ArPackppStd< T >::iter_

private

Number of Arnoldi iterations.

Definition at line 327 of file arpackpp.hh.

◆ modus_

template<class T >

ArPack<Real>::modus eigensolver::ArPackppStd< T >::modus_

private

Mode of the Arpack solver.

Definition at line 315 of file arpackpp.hh.

◆ whichEV_

template<class T >

char* eigensolver::ArPackppStd< T >::whichEV_

private

Identifier indicating which eigenvalues should be calculated.

Definition at line 312 of file arpackpp.hh.

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

eigensolver/arpackpp.hh

eigensolver::ArPackppStd< T > Class Template Referenceabstract

Public Member Functions

Protected Member Functions

Private Member Functions

Private Attributes

Detailed Description

template<class T> class eigensolver::ArPackppStd< T >

Constructor & Destructor Documentation

◆ ArPackppStd() [1/2]

◆ ArPackppStd() [2/2]

◆ ~ArPackppStd()

Member Function Documentation

◆ compute_()

◆ converged() [1/2]

◆ converged() [2/2]

◆ getEF()

◆ getEV()

◆ getRESID()

◆ info()

◆ iterations() [1/2]

◆ iterations() [2/2]

Member Data Documentation

◆ aow_

◆ arpackSolver_

◆ computed_

◆ convEigenvalues_

◆ eigenValues_

◆ eigenVectors_

◆ iter_

◆ modus_

◆ whichEV_

template<class T>
class eigensolver::ArPackppStd< T >