petsc-master 2014-12-24
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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 Parameters

snes - the SNES context
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

Notes

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

Keywords

SNES, nonlinear, get, convergence, tolerances

See Also

SNESSetTolerances()

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

Examples

src/snes/examples/tutorials/ex2.c.html
src/snes/examples/tutorials/ex3.c.html
src/snes/examples/tutorials/ex35.c.html
src/snes/examples/tutorials/ex74f.F90.html