EPSCISSSetExtraction#

Sets the extraction technique used in the CISS solver.

Synopsis#

#include "slepceps.h" 
PetscErrorCode EPSCISSSetExtraction(EPS eps,EPSCISSExtraction extraction)

Logically Collective

Input Parameters#

  • eps - the linear eigensolver context

  • extraction - the extraction technique

Options Database Key#

  • -eps_ciss_extraction - Sets the extraction technique (either ‘ritz’ or ‘hankel’)

Notes#

By default, the Rayleigh-Ritz extraction is used (EPS_CISS_EXTRACTION_RITZ).

If the ‘hankel’ option is specified (EPS_CISS_EXTRACTION_HANKEL), then the Block Hankel method is used for extracting eigenpairs.

See Also#

EPS: Eigenvalue Problem Solver, EPSCISSGetExtraction(), EPSCISSExtraction

Level#

advanced

Location#

src/eps/impls/ciss/ciss.c

Implementations#

EPSCISSSetExtraction_CISS() in src/eps/impls/ciss/ciss.c

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