slepc-3.18.0 2022-10-01
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# NEPGetIterationNumber

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

### Synopsis

    #include "slepcnep.h"
    PetscErrorCode NEPGetIterationNumber(NEP nep,PetscInt *its)

Not Collective

### Input Parameter

| nep | - the nonlinear eigensolver context

### Output Parameter

| its | - number of iterations

### Note

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

### See Also

NEPGetConvergedReason(), NEPSetTolerances()

### Level

intermediate

### Location

src/nep/interface/nepsolve.c

### Examples

src/nep/tutorials/ex20.c.html
src/nep/tutorials/ex20f90.F90.html
Index of all NEP routines
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Index of all manual pages