petsc-master 2018-04-25
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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

Examples

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

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