Chapter Introduction (pdf version)
NAG C Library Manual

f12 – Large Scale Eigenproblems

f12 Chapter Introduction
Routine
Name
Mark of
Introduction

Purpose
f12aac
Example Text
Example Data
8 nag_real_sparse_eigensystem_init
Initialization routine for (nag_real_sparse_eigensystem_iter (f12abc)) computing selected eigenvalues and, optionally, eigenvectors of a real nonsymmetric sparse (standard or generalized) eigenproblem
f12abc
Example Text
Example Data
8 nag_real_sparse_eigensystem_iter
Implements a reverse communication interface for the Implicitly Restarted Arnoldi iteration for computing selected eigenvalues and, optionally, eigenvectors of a real nonsymmetric sparse (standard or generalized) eigenproblem
f12acc
Example Text
Example Data
8 nag_real_sparse_eigensystem_sol
Returns the converged approximations (as determined by nag_real_sparse_eigensystem_iter (f12abc)) to eigenvalues of a real nonsymmetric sparse (standard or generalized) eigenproblem and, optionally, the corresponding approximate eigenvectors and/or an orthonormal basis for the associated approximate invariant subspace
f12adc
Example Text
Example Data
8 nag_real_sparse_eigensystem_option
Set a single option from a string (nag_real_sparse_eigensystem_iter (f12abc)/nag_real_sparse_eigensystem_sol (f12acc)/nag_real_banded_sparse_eigensystem_sol (f12agc))
f12aec
Example Text
Example Data
8 nag_real_sparse_eigensystem_monit
Provides monitoring information for nag_real_sparse_eigensystem_iter (f12abc)
f12afc 8 nag_real_banded_sparse_eigensystem_init
Initialization routine for (nag_real_banded_sparse_eigensystem_sol (f12agc)) computing selected eigenvalues and, optionally, eigenvectors of a real nonsymmetric banded (standard or generalized) eigenproblem
f12agc
Example Text
Example Data
8 nag_real_banded_sparse_eigensystem_sol
Computes approximations to selected eigenvalues of a real nonsymmetric banded (standard or generalized) eigenproblem and, optionally, the corresponding approximate eigenvectors and/or an orthonormal basis for the associated approximate invariant subspace
f12anc
Example Text
Example Data
8 nag_complex_sparse_eigensystem_init
Initialization routine for (nag_complex_sparse_eigensystem_iter (f12apc)) computing selected eigenvalues and, optionally, eigenvectors of a complex sparse (standard or generalized) eigenproblem
f12apc
Example Text
Example Data
8 nag_complex_sparse_eigensystem_iter
Implements a reverse communication interface for the Implicitly Restarted Arnoldi iteration for computing selected eigenvalues and, optionally, eigenvectors of a complex sparse (standard or generalized) eigenproblem
f12aqc
Example Text
Example Data
8 nag_complex_sparse_eigensystem_sol
Returns the converged approximations (as determined by nag_real_sparse_eigensystem_iter (f12abc)) to eigenvalues of a complex sparse (standard or generalized) eigenproblem and, optionally, the corresponding approximate eigenvectors and/or an orthonormal basis for the associated approximate invariant subspace
f12arc
Example Text
Example Data
8 nag_complex_sparse_eigensystem_option
Set a single option from a string (nag_complex_sparse_eigensystem_iter (f12apc)/nag_complex_sparse_eigensystem_sol (f12aqc))
f12asc
Example Text
Example Data
8 nag_complex_sparse_eigensystem_monit
Provides monitoring information for nag_complex_sparse_eigensystem_iter (f12apc)
f12fac
Example Text
Example Data
8 nag_real_symm_sparse_eigensystem_init
Initialization routine for (nag_real_symm_sparse_eigensystem_iter (f12fbc)) computing selected eigenvalues and, optionally, eigenvectors of a real symmetric sparse (standard or generalized) eigenproblem
f12fbc
Example Text
Example Data
8 nag_real_symm_sparse_eigensystem_iter
Implements a reverse communication interface for the Implicitly Restarted Arnoldi iteration for computing selected eigenvalues and, optionally, eigenvectors of a real symmetric sparse (standard or generalized) eigenproblem
f12fcc
Example Text
Example Data
8 nag_real_symm_sparse_eigensystem_sol
Returns the converged approximations (as determined by nag_real_sparse_eigensystem_iter (f12abc)) to eigenvalues of a real symmetric sparse (standard or generalized) eigenproblem and, optionally, the corresponding approximate eigenvectors and/or an orthonormal basis for the associated approximate invariant subspace
f12fdc
Example Text
Example Data
8 nag_real_symm_sparse_eigensystem_option
Set a single option from a string (nag_real_symm_sparse_eigensystem_iter (f12fbc)/nag_real_symm_sparse_eigensystem_sol (f12fcc)/nag_real_symm_banded_sparse_eigensystem_sol (f12fgc))
f12fec
Example Text
Example Data
8 nag_real_symm_sparse_eigensystem_monit
Provides monitoring information for nag_real_symm_sparse_eigensystem_iter (f12fbc)
f12ffc 8 nag_real_symm_banded_sparse_eigensystem_init
Initialization routine for (nag_real_symm_banded_sparse_eigensystem_sol (f12fgc)) computing selected eigenvalues and, optionally, eigenvectors of a real symmetric banded (standard or generalized) eigenproblem
f12fgc
Example Text
Example Data
8 nag_real_symm_banded_sparse_eigensystem_sol
Computes approximations to selected eigenvalues of a real symmetric banded (standard or generalized) eigenproblem and, optionally, the corresponding approximate eigenvectors and/or an orthonormal basis for the associated approximate invariant subspace

Chapter Introduction (pdf version)
NAG C Library Manual

The Numerical Algorithms Group Ltd, Oxford, UK. 2005