Overview

template<typename T>
struct batchlas::SteinParams< T >

Parameters for stein() (inverse iteration on a symmetric tridiagonal).

Definition at line 777 of file extensions.hh.

Variables

template<typename T>

int32_t batchlas::SteinParams< T >::max_iterations = 3

Fixed number of inverse-iteration steps; two or three suffice for eigenvalues accurate to working precision.

No convergence test is made.

Definition at line 780 of file extensions.hh.

template<typename T>

T batchlas::SteinParams< T >::ortho_threshold = T(1e-3)

Eigenvalues closer than ortho_threshold * ||T|| form one cluster and have their vectors explicitly reorthogonalised (LAPACK dstein uses 1e-3).

Definition at line 783 of file extensions.hh.

template<typename T>

uint32_t batchlas::SteinParams< T >::seed = 0x5eed1234u

Seed of the random starting vectors.

Definition at line 784 of file extensions.hh.