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F12 (Sparseig)
Large Scale Eigenproblems

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F12 (Sparseig) Chapter Introduction – A description of the Chapter and an overview of the algorithms available.

Function
Mark of
Introduction

Purpose
f12aac 8 nag_sparseig_real_init
Initialization function for (f12abc) computing selected eigenvalues and, optionally, eigenvectors of a real nonsymmetric sparse (standard or generalized) eigenproblem
f12abc 8 nag_sparseig_real_iter
Selected eigenvalues and, optionally, eigenvectors of a real nonsymmetric sparse eigenproblem, reverse communication
f12acc 8 nag_sparseig_real_proc
Selected eigenvalues and, optionally, eigenvectors of a real nonsymmetric sparse eigenproblem, postprocessing for f12abc
f12adc 8 nag_sparseig_real_option
Set a single option from a string (f12abc/f12acc/f12agc)
f12aec 8 nag_sparseig_real_monit
Provides monitoring information for f12abc
f12afc 8 nag_sparseig_real_band_init
Initialization routine for (f12agc) computing selected eigenvalues and, optionally, eigenvectors of a real nonsymmetric banded (standard or generalized) eigenproblem
f12agc 8 nag_sparseig_real_band_solve
Selected eigenvalues and, optionally, eigenvectors of a real nonsymmetric banded eigenproblem, driver
f12anc 8 nag_sparseig_complex_init
Initialization routine for (f12apc) computing selected eigenvalues and, optionally, eigenvectors of a complex sparse (standard or generalized) eigenproblem
f12apc 8 nag_sparseig_complex_iter
Selected eigenvalues and, optionally, eigenvectors of a complex sparse eigenproblem, reverse communication
f12aqc 8 nag_sparseig_complex_proc
Selected eigenvalues and, optionally, eigenvectors of a complex sparse eigenproblem, postprocessing for f12apc
f12arc 8 nag_sparseig_complex_option
Set a single option from a string (f12apc/f12aqc)
f12asc 8 nag_sparseig_complex_monit
Provides monitoring information for f12apc
f12atc 24 nag_sparseig_complex_band_init
Initialization function for f12auc computing selected eigenvalues and, optionally, eigenvectors of a complex banded (standard or generalized) eigenproblem
f12auc 24 nag_sparseig_complex_band_solve
Selected eigenvalues and, optionally, eigenvectors of complex non-Hermitian banded eigenproblem, driver
f12fac 8 nag_sparseig_real_symm_init
Initialization routine for (f12fbc) computing selected eigenvalues and, optionally, eigenvectors of a real symmetric sparse (standard or generalized) eigenproblem
f12fbc 8 nag_sparseig_real_symm_iter
Selected eigenvalues and, optionally, eigenvectors of a real symmetric sparse eigenproblem, reverse communication
f12fcc 8 nag_sparseig_real_symm_proc
Selected eigenvalues and, optionally, eigenvectors of a real symmetric sparse eigenproblem, postprocessing for f12fbc
f12fdc 8 nag_sparseig_real_symm_option
Set a single option from a string (f12fbc/f12fcc/f12fgc)
f12fec 8 nag_sparseig_real_symm_monit
Provides monitoring information for f12fbc
f12ffc 8 nag_sparseig_real_symm_band_init
Initialization routine for (f12fgc) computing selected eigenvalues and, optionally, eigenvectors of a real symmetric banded (standard or generalized) eigenproblem
f12fgc 8 nag_sparseig_real_symm_band_solve
Selected eigenvalues and, optionally, eigenvectors of a real symmetric banded eigenproblem, driver
f12jac 27.3 nag_sparseig_feast_init
Initialization function for (f12jjc, f12jkc, f12jrc, f12jsc, f12jtc, f12juc and f12jvc) computing eigenvalues within a selected region of the complex plane, and eigenvectors, of a standard, generalized or polynomial eigenproblem
f12jbc 27.3 nag_sparseig_feast_option
Set a single option from a string (f12jjc, f12jkc, f12jrc, f12jsc, f12jtc, f12juc and f12jvc)
f12jec 27.3 nag_sparseig_feast_symm_contour
Setup function for f12jjc and f12jrc. Computes nodes and weights for an elliptical contour, symmetric about the real line
f12jfc 27.3 nag_sparseig_feast_gen_contour
Setup function for f12jkc, f12jsc, f12jtc, f12juc and f12jvc. Computes nodes and weights for an elliptical contour in the complex plane
f12jgc 27.3 nag_sparseig_feast_custom_contour
Setup function for f12jkc, f12jsc, f12jtc, f12juc and f12jvc. Creates nodes and weights for a custom contour in the complex plane
f12jjc 27.3 nag_sparseig_feast_real_symm_solve
Selected eigenvalues and eigenvectors of a real symmetric eigenproblem, reverse communication driver
f12jkc 27.3 nag_sparseig_feast_real_gen_solve
Selected eigenvalues and eigenvectors of a real nonsymmetric eigenproblem, reverse communication driver
f12jrc 27.3 nag_sparseig_feast_complex_herm_solve
Selected eigenvalues and eigenvectors of a complex Hermitian eigenproblem, reverse communication driver
f12jsc 27.3 nag_sparseig_feast_complex_symm_solve
Selected eigenvalues and eigenvectors of a complex symmetric eigenproblem, reverse communication driver
f12jtc 27.3 nag_sparseig_feast_complex_gen_solve
Selected eigenvalues and eigenvectors of a complex non-Hermitian eigenproblem, reverse communication driver
f12juc 27.3 nag_sparseig_feast_poly_symm_solve
Selected eigenvalues and eigenvectors of a symmetric polynomial eigenproblem, reverse communication driver
f12jvc 27.3 nag_sparseig_feast_poly_gen_solve
Selected eigenvalues and eigenvectors of a nonsymmetric polynomial eigenproblem, reverse communication driver
f12jzc 27.3 nag_sparseig_feast_free
Destroy the data handle initialized by f12jac and deallocate all the memory used