|virtual bool||computeShiftedMatrix (double alpha, double beta, const Epetra_Vector &x, Epetra_Operator &A)=0|
|Call user routine for computing the shifted matrix where is the Jacobian matrix and is the mass matrix. |
|virtual void||setXdot (const Epetra_Vector &xdot, const double time)|
|Routine used in XYZT to set x_dot and time in the interface. |
Used by LOCA::Epetra::Group to provide a link to the external code for computing the shifted matrix.
This interface is derived from the NOX::Epetra::Interface::Jacobian and additionally provides a method for computing the shifted matrix . This is needed for linear stability analysis and Hopf tracking.
|virtual void LOCA::Epetra::Interface::TimeDependent::setXdot||(||const Epetra_Vector &||xdot,|
Routine used in XYZT to set x_dot and time in the interface.
The computeF() routine for XYZT problems needs to be a function of x_dot, but th NOX/LOCA computeF() does not take x_dot as an argument. This is used to set x_dot in the application interface so the subsequent call to computeF has the correct x_dot value. The timeStep argument is sent so the use can set the global time, for cases when computeF, computeJacobian, computeMassMatrix fills are functions of time (nonautonomous systems).