Anasazi::BasicSort< MagnitudeType > Class Template Reference

An implementation of the Anasazi::SortManager that performs a collection of common sorting techniques. More...

#include <AnasaziBasicSort.hpp>

Inheritance diagram for Anasazi::BasicSort< MagnitudeType >:

Public Member Functions
	BasicSort (Teuchos::ParameterList &pl)
	Parameter list driven constructor. More...
	BasicSort (const std::string &which="LM")
	String driven constructor. More...
virtual	~BasicSort ()
	Destructor. More...
void	setSortType (const std::string &which)
	Set sort type. More...
void	sort (std::vector< MagnitudeType > &evals, Teuchos::RCP< std::vector< int > > perm=Teuchos::null, int n=-1) const
	Sort real eigenvalues, optionally returning the permutation vector. More...
void	sort (std::vector< MagnitudeType > &r_evals, std::vector< MagnitudeType > &i_evals, Teuchos::RCP< std::vector< int > > perm=Teuchos::null, int n=-1) const
	Sort complex eigenvalues, optionally returning the permutation vector. More...
Public Member Functions inherited from Anasazi::SortManager< MagnitudeType >
	SortManager ()
	Default constructor. More...
	SortManager (Teuchos::ParameterList &pl)
	Constructor accepting a Teuchos::ParameterList. This is the default mode for instantiating a SortManager. More...
virtual	~SortManager ()
	Destructor. More...

Detailed Description

template<class MagnitudeType>
class Anasazi::BasicSort< MagnitudeType >

An implementation of the Anasazi::SortManager that performs a collection of common sorting techniques.

Author

Chris Baker, Ulrich Hetmaniuk, Rich Lehoucq, and Heidi Thornquist

Examples:

BlockKrylovSchur/BlockKrylovSchurEpetraEx.cpp.

Definition at line 33 of file AnasaziBasicSort.hpp.

Constructor & Destructor Documentation

template<class MagnitudeType >

Anasazi::BasicSort< MagnitudeType >::BasicSort

(

Teuchos::ParameterList &

pl

)

Parameter list driven constructor.

This constructor accepts a paramter list with the following options:

• "Sort Strategy" - a string specifying the desired sorting strategy. See setSortType() for valid options.

Definition at line 160 of file AnasaziBasicSort.hpp.

template<class MagnitudeType >

Anasazi::BasicSort< MagnitudeType >::BasicSort

(

const std::string &

which = "LM"

)

String driven constructor.

Directly pass the string specifying sort strategy. See setSortType() for valid options.

Definition at line 168 of file AnasaziBasicSort.hpp.

template<class MagnitudeType >

Anasazi::BasicSort< MagnitudeType >::~BasicSort ( )

virtual

Destructor.

Definition at line 174 of file AnasaziBasicSort.hpp.

Member Function Documentation

template<class MagnitudeType >

void Anasazi::BasicSort< MagnitudeType >::setSortType

(

const std::string &

which

)

Set sort type.

Parameters

which

[in] The eigenvalues of interest for this eigenproblem. "LM" - Largest Magnitude [ default ] "SM" - Smallest Magnitude "LR" - Largest Real "SR" - Smallest Real "LI" - Largest Imaginary "SI" - Smallest Imaginary

Definition at line 178 of file AnasaziBasicSort.hpp.

template<class MagnitudeType >

void Anasazi::BasicSort< MagnitudeType >::sort ( std::vector< MagnitudeType > &  evals, Teuchos::RCP< std::vector< int > >  perm = Teuchos::null, int  n = -1  ) const

virtual

Sort real eigenvalues, optionally returning the permutation vector.

Note

This method is not valid when the sort manager is configured for "LI" or "SI" sorting (i.e., sorting by the imaginary components). Calling this method in that scenario will result in a SortManagerError exception.

Parameters

evals	[in/out] Vector of length at least n containing the eigenvalues to be sorted. On output, the first n eigenvalues will be sorted. The rest will be unchanged.
perm	[out] Vector of length at least n to store the permutation index (optional). If specified, on output the first n eigenvalues will contain the permutation indices, in the range [0,n-1], such that evals_out[i] = evals_in[perm[i]]
n	[in] Number of values in evals to be sorted. If n == -1, all values will be sorted.

Implements Anasazi::SortManager< MagnitudeType >.

Definition at line 207 of file AnasaziBasicSort.hpp.

template<class MagnitudeType >

void Anasazi::BasicSort< MagnitudeType >::sort ( std::vector< MagnitudeType > &  r_evals, std::vector< MagnitudeType > &  i_evals, Teuchos::RCP< std::vector< int > >  perm = Teuchos::null, int  n = -1  ) const

virtual

Sort complex eigenvalues, optionally returning the permutation vector.

This routine takes two vectors, one for each part of a complex eigenvalue. This is helpful for solving real, non-symmetric eigenvalue problems.

Parameters

r_evals	[in/out] Vector of length at least n containing the real part of the eigenvalues to be sorted. On output, the first n eigenvalues will be sorted. The rest will be unchanged.
i_evals	[in/out] Vector of length at least n containing the imaginary part of the eigenvalues to be sorted. On output, the first n eigenvalues will be sorted. The rest will be unchanged.
perm	[out] Vector of length at least n to store the permutation index (optional). If specified, on output the first n eigenvalues will contain the permutation indices, in the range [0,n-1], such that r_evals_out[i] = r_evals_in[perm[i]] and similarly for i_evals.
n	[in] Number of values in r_evals, i_evals to be sorted. If n == -1, all values will be sorted, as decided by the minimum of the length of r_evals and the length of i_evals.

Implements Anasazi::SortManager< MagnitudeType >.

Definition at line 291 of file AnasaziBasicSort.hpp.

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

• AnasaziBasicSort.hpp