SNESGetTolerances

Gets various parameters used in 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 - absolute convergence tolerance

• rtol - relative convergence tolerance

• stol - convergence tolerance in terms of the norm of the change in the solution between steps

• maxit - maximum number of iterations

• maxf - maximum number of function evaluations, PETSC_UNLIMITED indicates no bound

Note

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

See Also

SNES: Nonlinear Solvers, SNES, SNESSetTolerances()

Level

intermediate

Location

src/snes/interface/snes.c

Examples

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

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