MFNGetIterationNumber#

Gets the current iteration number. If the call to MFNSolve() is complete, then it returns the number of iterations carried out by the solution method.

Synopsis#

#include "slepcmfn.h" 
PetscErrorCode MFNGetIterationNumber(MFN mfn,PetscInt *its)

Not Collective

Input Parameter#

mfn - the matrix function context

Output Parameter#

its - number of iterations

Note#

During the i-th iteration this call returns i-1. If MFNSolve() is complete, then parameter “its” contains either the iteration number at which convergence was successfully reached, or failure was detected. Call MFNGetConvergedReason() to determine if the solver converged or failed and why.

Level#

intermediate

Location#

src/mfn/interface/mfnsolve.c

Examples#

src/mfn/tutorials/ex37.c
src/mfn/tutorials/ex23f.F90
src/mfn/tutorials/ex23.c

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