Defined namespace eigvec containing functions for computing largest eigenvalues and corresponding eigenvectors using the power method or the Lanczos method. More...

#include "matrix_utilities.h"
#include "integral_matrix_wrappers.h"
#include "SizesAndBlocks.h"
#include "output.h"
#include <iostream>
#include <string.h>
#include "LanczosSeveralLargestEig.h"

Namespaces
namespace	eigvec

Functions
template<typename Treal, typename MatrixType, typename VectorType>
Treal	eigvec::compute_rayleigh_quotient (const MatrixType &A, const VectorType &eigVec)
	Get Rayleigh quotient: A = (y'Ay)/(y'y), y = eigVecPtr.
template<typename Treal, typename MatrixType, typename VectorType>
void	eigvec::lanczos_method (const MatrixType &A, std::vector< Treal > &eigVal, std::vector< VectorType > &eigVec, int number_of_eigenvalues, const Treal TOL, std::vector< int > &num_iter, int maxit=200, bool do_deflation=false)
	Use Lanzcos method for computing eigenvectors.
template<typename Treal, typename MatrixType, typename VectorType>
void	eigvec::power_method (const MatrixType &A, Treal &eigVal, VectorType &eigVec, const Treal TOL, int &num_iter, int maxit=200)
	Use power method for computing eigenvectors.
template<typename Treal, typename MatrixType, typename VectorType>
int	eigvec::computeEigenvectors (const MatrixType &A, Treal tol, std::vector< Treal > &eigVal, std::vector< VectorType > &eigVec, int number_of_eigenvalues_to_compute, std::string method, std::vector< int > &num_iter, int maxit=200, bool do_deflation=false)
	Function for choosing method for computing eigenvectors.

Detailed Description

Defined namespace eigvec containing functions for computing largest eigenvalues and corresponding eigenvectors using the power method or the Lanczos method.

See function computeEigenvectors.

Author: Anastasia Kruchinina

Namespaces

Functions

Detailed Description