DSNEPSetRefine#
Sets the tolerance and the number of iterations of Newton iterative refinement for eigenpairs.
Synopsis#
#include "slepcds.h"
PetscErrorCode DSNEPSetRefine(DS ds,PetscReal tol,PetscInt its)
Logically Collective
Input Parameters#
ds - the direct solver context
tol - the tolerance
its - the number of iterations
Options Database Key#
-ds_nep_refine_tol
- sets the tolerance-ds_nep_refine_its
- sets the number of Newton iterations
Notes#
Iterative refinement of eigenpairs is currently used only in the contour integral method.
Use PETSC_CURRENT to retain the current value of any of the parameters. Use PETSC_DETERMINE for either argument to assign a default value computed internally.
See Also#
Level#
advanced
Location#
Implementations#
DSNEPSetRefine_NEP() in src/sys/classes/ds/impls/nep/dsnep.c
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