Class for the LAPACK eigensolver. More...

#include <eigen_solver.h>

Inheritance diagram for oomph::LAPACK_QZ:

Public Member Functions
	LAPACK_QZ ()
	Empty constructor. More...

	LAPACK_QZ (const LAPACK_QZ &)
	Empty copy constructor. More...

virtual	~LAPACK_QZ ()
	Empty desctructor. More...

void	solve_eigenproblem (Problem *const &problem_pt, const int &n_eval, Vector< std::complex< double > > &eigenvalue, Vector< DoubleVector > &eigenvector)
	Solve the eigen problem. More...

void	find_eigenvalues (const ComplexMatrixBase &A, const ComplexMatrixBase &M, Vector< std::complex< double > > &eigenvalue, Vector< Vector< std::complex< double > > > &eigenvector)

void	get_eigenvalues_right_of_shift ()

Public Member Functions inherited from oomph::EigenSolver
	EigenSolver ()
	Empty constructor. More...

	EigenSolver (const EigenSolver &)
	Empty copy constructor. More...

virtual	~EigenSolver ()
	Empty destructor. More...

void	set_shift (const double &shift_value)
	Set the value of the shift. More...

const double &	get_shift () const
	Return the value of the shift (const version) More...

Public Member Functions inherited from oomph::DistributableLinearAlgebraObject
	DistributableLinearAlgebraObject ()
	Default constructor - create a distribution. More...

	DistributableLinearAlgebraObject (const DistributableLinearAlgebraObject &matrix)
	Broken copy constructor. More...

void	operator= (const DistributableLinearAlgebraObject &)
	Broken assignment operator. More...

virtual	~DistributableLinearAlgebraObject ()
	Destructor. More...

LinearAlgebraDistribution *	distribution_pt () const
	access to the LinearAlgebraDistribution More...

unsigned	nrow () const
	access function to the number of global rows. More...

unsigned	nrow_local () const
	access function for the num of local rows on this processor. More...

unsigned	nrow_local (const unsigned &p) const
	access function for the num of local rows on this processor. More...

unsigned	first_row () const
	access function for the first row on this processor More...

unsigned	first_row (const unsigned &p) const
	access function for the first row on this processor More...

bool	distributed () const
	distribution is serial or distributed More...

bool	distribution_built () const

void	build_distribution (const LinearAlgebraDistribution *const dist_pt)
	setup the distribution of this distributable linear algebra object More...

void	build_distribution (const LinearAlgebraDistribution &dist)
	setup the distribution of this distributable linear algebra object More...

Additional Inherited Members
Protected Member Functions inherited from oomph::DistributableLinearAlgebraObject
void	clear_distribution ()
	clear the distribution of this distributable linear algebra object More...

Protected Attributes inherited from oomph::EigenSolver
double	Sigma_real
	Double value that represents the real part of the shift in shifted eigensolvers. More...

Detailed Description

Class for the LAPACK eigensolver.

Definition at line 193 of file eigen_solver.h.

Constructor & Destructor Documentation

◆ LAPACK_QZ() [1/2]

oomph::LAPACK_QZ::LAPACK_QZ ( )

inline

Empty constructor.

Definition at line 198 of file eigen_solver.h.

◆ LAPACK_QZ() [2/2]

oomph::LAPACK_QZ::LAPACK_QZ ( const LAPACK_QZ & )

inline

Empty copy constructor.

Definition at line 201 of file eigen_solver.h.

◆ ~LAPACK_QZ()

virtual oomph::LAPACK_QZ::~LAPACK_QZ ( )

inlinevirtual

Empty desctructor.

Definition at line 204 of file eigen_solver.h.

References oomph::EigenSolver::solve_eigenproblem().

Member Function Documentation

◆ find_eigenvalues()

void oomph::LAPACK_QZ::find_eigenvalues	(	const ComplexMatrixBase &	A,
		const ComplexMatrixBase &	M,
		Vector< std::complex< double > > &	eigenvalue,
		Vector< Vector< std::complex< double > > > &	eigenvector
	)

Find the eigenvalues of a generalised eigenvalue problem specified by $Ax = \lambda Mx$

Use LAPACK to solve a complex eigen problem specified by the given matrices.

Definition at line 598 of file eigen_solver.cc.

References i, and oomph::ComplexMatrixBase::nrow().

◆ get_eigenvalues_right_of_shift()

void oomph::LAPACK_QZ::get_eigenvalues_right_of_shift ( )

inline

Set the desired eigenvalues to be right of the shift Dummy at the moment

Definition at line 221 of file eigen_solver.h.

◆ solve_eigenproblem()

void oomph::LAPACK_QZ::solve_eigenproblem	(	Problem *const &	problem_pt,
		const int &	n_eval,
		Vector< std::complex< double > > &	eigenvalue,
		Vector< DoubleVector > &	eigenvector
	)

virtual

Solve the eigen problem.

Use LAPACK to solve an eigen problem that is assembled by elements in a mesh in a Problem object.

Implements oomph::EigenSolver.

Definition at line 462 of file eigen_solver.cc.

References oomph::DistributableLinearAlgebraObject::build_distribution(), oomph::Problem::communicator_pt(), oomph::DistributableLinearAlgebraObject::distribution_pt(), oomph::Problem::get_eigenproblem_matrices(), i, oomph::Problem::ndof(), and oomph::EigenSolver::Sigma_real.

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

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ LAPACK_QZ() [1/2]

◆ LAPACK_QZ() [2/2]

◆ ~LAPACK_QZ()

Member Function Documentation

◆ find_eigenvalues()

◆ get_eigenvalues_right_of_shift()

◆ solve_eigenproblem()