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
- 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#
Examples#
Index of all EPS routines Table of Contents for all manual pages Index of all manual pages