NEPNArnoldiGetLagPreconditioner — SLEPc 3.25.0 documentation

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# NEPNArnoldiGetLagPreconditioner

Indicates how often the preconditioner is rebuilt.

## Synopsis

    #include "slepcnep.h"
    PetscErrorCode NEPNArnoldiGetLagPreconditioner(NEP nep,PetscInt *lag)

Not Collective

## Input Parameter

- nep - the nonlinear eigensolver context

## Output Parameter

- lag - the lag parameter

## See Also

NEP: Nonlinear Eigenvalue Problems, `NEPNARNOLDI`, `NEPNArnoldiSetLagPreconditioner()`

## Level

intermediate

## Location

src/nep/impls/narnoldi/narnoldi.c

## Implementations

NEPNArnoldiGetLagPreconditioner_NArnoldi() in src/nep/impls/narnoldi/narnoldi.c

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