slepc-3.22.2 2024-12-02
PEPComputeError
Computes the error (based on the residual norm) associated with the i-th computed eigenpair.
Synopsis
#include "slepcpep.h"
PetscErrorCode PEPComputeError(PEP pep,PetscInt i,PEPErrorType type,PetscReal *error)
Collective
Input Parameters
| pep | - the polynomial eigensolver context
|
| i | - the solution index
|
| type | - the type of error to compute
|
Output Parameter
Notes
The error can be computed in various ways, all of them based on the residual
norm ||P(l)x||_2 where l is the eigenvalue and x is the eigenvector.
See the users guide for additional details.
See Also
PEPErrorType, PEPSolve(), PEPGetErrorEstimate()
Level
beginner
Location
src/pep/interface/pepsolve.c
Examples
src/pep/tutorials/ex16.c
Index of all PEP routines
Table of Contents for all manual pages
Index of all manual pages