#include "slepcnep.h" PetscErrorCode NEPSetJacobian(NEP nep,Mat A,PetscErrorCode (*jac)(NEP nep,PetscScalar lambda,Mat J,void *ctx),void *ctx)Collective
nep | - the NEP context | |
A | - Jacobian matrix | |
jac | - Jacobian evaluation routine (if NULL then NEP retains any previously set value) | |
ctx | - [optional] user-defined context for private data for the Jacobian evaluation routine (may be NULL) (if NULL then NEP retains any previously set value) |
PetscErrorCode jac(NEP nep,PetscScalar lambda,Mat J,void *ctx)
nep | - the NEP context | |
lambda | - the scalar argument where T'(.) must be evaluated | |
J | - matrix that will contain T'(lambda) | |
ctx | - (optional) user-defined context, as set by NEPSetJacobian() |