NEPComputeError#
Computes the error (based on the residual norm) associated with the i-th computed eigenpair.
Synopsis#
#include "slepcnep.h"
PetscErrorCode NEPComputeError(NEP nep,PetscInt i,NEPErrorType type,PetscReal *error)
Collective
Input Parameters#
nep - the nonlinear 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 computed as ||T(lambda)x||_2 where lambda is the eigenvalue and x is the eigenvector.
See Also#
NEPErrorType, NEPSolve(), NEPGetErrorEstimate()
Level#
beginner
Location#
Examples#
src/nep/tutorials/ex20f.F90
src/nep/tutorials/ex20.c
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