slepc-main 2024-12-17

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.

Level

intermediate

Location

src/nep/interface/nepview.c

Examples

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

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