#include "slepcnep.h" PetscErrorCode NEPNArnoldiSetLagPreconditioner(NEP nep,PetscInt lag)Logically Collective
| nep | - nonlinear eigenvalue solver | |
| lag | - 0 indicates NEVER rebuild, 1 means rebuild every time the Jacobian is computed within the nonlinear iteration, 2 means every second time the Jacobian is built, etc. |
| -nep_narnoldi_lag_preconditioner <lag> | - the lag value |