EPSComputeError#

Computes the error (based on the residual norm) associated with the i-th computed eigenpair.

Synopsis#

#include "slepceps.h" 
PetscErrorCode EPSComputeError(EPS eps,PetscInt i,EPSErrorType type,PetscReal *error)

Collective

Input Parameters#

  • eps - the linear 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 ||Ax-kBx||_2 where k is the eigenvalue and x is the eigenvector.

See Also#

EPS: Eigenvalue Problem Solver, EPSErrorType, EPSSolve(), EPSGetErrorEstimate()

Level#

beginner

Location#

src/eps/interface/epssolve.c

Examples#

src/eps/tutorials/ex1.c
src/eps/tutorials/ex31.c
src/eps/tutorials/ex19.c

Index of all EPS routines Table of Contents for all manual pages Index of all manual pages