petsc-3.13.6 2020-09-29
SNESConvergenceTestFunction
functional form used for testing of convergence of nonlinear solver
Synopsis
#include <petscsnes.h>
$ PetscErrorCode SNESConvergenceTest(SNES snes,PetscInt it,PetscReal xnorm,PetscReal gnorm,PetscReal f,SNESConvergedReason *reason,void *cctx)
Collective on snes
Input Parameters
| snes | - the SNES context
|
| it | - current iteration (0 is the first and is before any Newton step)
|
| xnorm | - 2-norm of current iterate
|
| gnorm | - 2-norm of current step
|
| f | - 2-norm of function
|
| cctx | - [optional] convergence context
|
Output Parameter
reason -reason for convergence/divergence, only needs to be set when convergence or divergence is detected
See Also
SNESSetConvergenceTest(), SNESGetConvergenceTest()
Level
intermediate
Location
src/snes/interface/snes.c
Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages