NEPErrorView#

Displays the errors associated with the computed solution (as well as the eigenvalues).

Synopsis#

#include "slepcnep.h" 
PetscErrorCode NEPErrorView(NEP nep,NEPErrorType etype,PetscViewer viewer)

Collective

Input Parameters#

  • nep - the nonlinear eigensolver context

  • etype - error type

  • viewer - optional visualization context

Options Database Keys#

  • -nep_error_absolute - print absolute errors of each eigenpair

  • -nep_error_relative - print relative errors of each eigenpair

  • -nep_error_backward - print backward errors of each eigenpair

Notes#

By default, this function checks the error of all eigenpairs and prints the eigenvalues if all of them are below the requested tolerance. If the viewer has format=PETSC_VIEWER_ASCII_INFO_DETAIL then a table with eigenvalues and corresponding errors is printed.

See Also#

NEPSolve(), NEPValuesView(), NEPVectorsView()

Level#

intermediate

Location#

src/nep/interface/nepview.c

Examples#

src/nep/tutorials/ex27f.F90
src/nep/tutorials/ex22f.F90
src/nep/tutorials/ex21.c
src/nep/tutorials/ex54f.F90
src/nep/tutorials/ex22.c
src/nep/tutorials/ex27.c

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