MFNSetTolerances#
Sets the tolerance and maximum iteration count used by the MFN convergence tests.
Synopsis#
#include "slepcmfn.h"
PetscErrorCode MFNSetTolerances(MFN mfn,PetscReal tol,PetscInt maxits)
Logically Collective
Input Parameters#
mfn - the matrix function context
tol - the convergence tolerance
maxits - maximum number of iterations to use
Options Database Keys#
-mfn_tol
- Sets the convergence tolerance-mfn_max_it
- Sets the maximum number of iterations allowed
Notes#
Use PETSC_CURRENT to retain the current value of any of the parameters. Use PETSC_DETERMINE for either argument to assign a default value computed internally (may be different in each solver). For maxits use PETSC_UMLIMITED to indicate there is no upper bound on this value.
See Also#
MFNGetTolerances()
Level#
intermediate
Location#
Examples#
src/mfn/tutorials/ex23.c
src/mfn/tutorials/ex23f.F90
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