#include "slepcnep.h" PetscErrorCode NEPSetFunction(NEP nep,Mat A,Mat B,PetscErrorCode (*fun)(NEP nep,PetscScalar lambda,Mat T,Mat P,void *ctx),void *ctx)Collective
nep | - the NEP context | |
A | - Function matrix | |
B | - preconditioner matrix (usually same as A) | |
fun | - Function evaluation routine (if NULL then NEP retains any previously set value) | |
ctx | - [optional] user-defined context for private data for the Function evaluation routine (may be NULL) (if NULL then NEP retains any previously set value) |
PetscErrorCode fun(NEP nep,PetscScalar lambda,Mat T,Mat P,void *ctx)
nep | - the NEP context | |
lambda | - the scalar argument where T(.) must be evaluated | |
T | - matrix that will contain T(lambda) | |
P | - (optional) different matrix to build the preconditioner | |
ctx | - (optional) user-defined context, as set by NEPSetFunction() |