slepc-3.21.0 2024-03-30
EPSSetTwoSided
Sets the solver to use a two-sided variant so that left eigenvectors are also computed.
Synopsis
#include "slepceps.h"
PetscErrorCode EPSSetTwoSided(EPS eps,PetscBool twosided)
Logically Collective
Input Parameters
| eps | - the eigensolver context
|
| twosided | - whether the two-sided variant is to be used or not
|
Options Database Keys
| -eps_two_sided <boolean> | - Sets/resets the twosided flag
|
Notes
If the user sets twosided=PETSC_TRUE then the solver uses a variant of
the algorithm that computes both right and left eigenvectors. This is
usually much more costly. This option is not available in all solvers.
When using two-sided solvers, the problem matrices must have both the
MatMult and MatMultTranspose operations defined.
See Also
EPSGetTwoSided(), EPSGetLeftEigenvector()
Level
advanced
Location
src/eps/interface/epsopts.c
Examples
src/eps/tutorials/ex41.c
Index of all EPS routines
Table of Contents for all manual pages
Index of all manual pages