petsc-3.7.5 2017-01-01

SNESConvergedSkip

Convergence test for SNES that NEVER returns as converged, UNLESS the maximum number of iteration have been reached.

Synopsis

#include "petsc/private/snesimpl.h"   
PetscErrorCode  SNESConvergedSkip(SNES snes,PetscInt it,PetscReal xnorm,PetscReal snorm,PetscReal fnorm,SNESConvergedReason *reason,void *dummy)

Logically Collective on SNES

Input Parameters

	snes	- the SNES context
	it	- the iteration (0 indicates before any Newton steps)
	xnorm	- 2-norm of current iterate
	snorm	- 2-norm of current step
	fnorm	- 2-norm of function at current iterate
	dummy	- unused context

Output Parameter

reason -SNES_CONVERGED_ITERATING, SNES_CONVERGED_ITS, or SNES_DIVERGED_FNORM_NAN

Notes

Convergence is then declared after a fixed number of iterations have been used.

Keywords