petsc-master 2019-12-13
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KSPGetTolerances

Gets the relative, absolute, divergence, and maximum iteration tolerances used by the default KSP convergence tests.

Synopsis

#include "petscksp.h" 
PetscErrorCode  KSPGetTolerances(KSP ksp,PetscReal *rtol,PetscReal *abstol,PetscReal *dtol,PetscInt *maxits)
Not Collective

Input Parameter

ksp -the Krylov subspace context

Output Parameters

rtol - the relative convergence tolerance
abstol - the absolute convergence tolerance
dtol - the divergence tolerance
maxits - maximum number of iterations

Notes

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

maximum, iterations

See Also

KSPSetTolerances(), KSP

Level

intermediate

Location

src/ksp/ksp/interface/itfunc.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages