SNESGetTolerances#

Gets various parameters used in SNES convergence tests.

Synopsis#

#include "petscsnes.h"  
PetscErrorCode SNESGetTolerances(SNES snes, PetscReal *atol, PetscReal *rtol, PetscReal *stol, PetscInt *maxit, PetscInt *maxf)

Not Collective

Input Parameter#

snes - the SNES context

Output Parameters#

atol - the absolute convergence tolerance
rtol - the relative convergence tolerance
stol - convergence tolerance in terms of the norm of the change in the solution between steps
maxit - the maximum number of iterations allowed
maxf - the maximum number of function evaluations allowed, PETSC_UNLIMITED indicates no bound

Notes#

See SNESSetTolerances() for details on the parameters.

The user can specify NULL for any parameter that is not needed.

Level#

intermediate

Location#

src/snes/interface/snes.c

Examples#

src/snes/tutorials/ex2.c
src/snes/tutorials/ex35.c
src/snes/tutorials/ex3k.kokkos.cxx
src/snes/tutorials/ex3.c

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