This class provides an eigenvalue solver for PETSc matrices. It is a wrapper for the SLEPc eigenvalue solver. More...

#include <slepc.h>

Public Member Functions
	SLEPcEigenSolver (MPI_Comm comm)
	Create eigenvalue solver.

	SLEPcEigenSolver (EPS eps, bool inc_ref_count)
	Create eigenvalue solver from EPS object.

	SLEPcEigenSolver (const SLEPcEigenSolver &)=delete

	SLEPcEigenSolver (SLEPcEigenSolver &&solver)
	Move constructor.

	~SLEPcEigenSolver ()
	Destructor.

SLEPcEigenSolver &	operator= (const SLEPcEigenSolver &)=delete

SLEPcEigenSolver &	operator= (SLEPcEigenSolver &&solver)
	Move assignment.

void	set_operators (const Mat A, const Mat B)

void	solve ()
	Compute all eigenpairs of the matrix A (solve \(A x = \lambda x\))

void	solve (std::int64_t n)

std::complex< PetscReal >	get_eigenvalue (int i) const
	Get ith eigenvalue.

void	get_eigenpair (PetscScalar &lr, PetscScalar &lc, Vec r, Vec c, int i) const
	Get ith eigenpair.

int	get_iteration_number () const
	Get the number of iterations used by the solver.

std::int64_t	get_number_converged () const
	Get the number of converged eigenvalues.

void	set_options_prefix (std::string options_prefix)

std::string	get_options_prefix () const

void	set_from_options () const
	Set options from PETSc options database.

EPS	eps () const
	Return SLEPc EPS pointer.

MPI_Comm	comm () const
	Return MPI communicator.

Detailed Description

This class provides an eigenvalue solver for PETSc matrices. It is a wrapper for the SLEPc eigenvalue solver.

Member Function Documentation

std::string get_options_prefix ( ) const

Returns the prefix used by PETSc when searching the PETSc options database

void set_operators	(	const Mat	A,
		const Mat	B )

Set operators (B may be nullptr for regular eigenvalues problems)

void set_options_prefix ( std::string options_prefix )

Sets the prefix used by PETSc when searching the PETSc options database

void solve ( std::int64_t n )

Compute the n first eigenpairs of the matrix A (solve \(A x = \lambda x\))

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