#include "slepcnep.h" PetscErrorCode NEPCISSSetExtraction(NEP nep,NEPCISSExtraction extraction)Logically Collective
| nep | - the nonlinear eigensolver context | |
| extraction | - the extraction technique |
| -nep_ciss_extraction | - Sets the extraction technique (either 'ritz', 'hankel' or 'caa') |
If the 'hankel' or the 'caa' option is specified (NEP_CISS_EXTRACTION_HANKEL or NEP_CISS_EXTRACTION_CAA), then the Block Hankel method, or the Communication-avoiding Arnoldi method, respectively, is used for extracting eigenpairs.