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#
error - the error
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#
Examples#
Index of all PEP routines Table of Contents for all manual pages Index of all manual pages