get TS Jacobian evaluation function


#include "petscts.h" 
PetscErrorCode DMTSGetRHSJacobian(DM dm,TSRHSJacobian *func,void **ctx)
Not Collective

Input Argument

dm - DM to be used with TS

Output Arguments

func - Jacobian evaluation function, see TSSetRHSJacobian() for calling sequence
ctx - context for residual evaluation

Level: advanced


TSGetJacobian() is normally used, but it calls this function internally because the user context is actually associated with the DM. This makes the interface consistent regardless of whether the user interacts with a DM or not. If DM took a more central role at some later date, this could become the primary method of setting the Jacobian.

See Also

DMTSSetContext(), TSSetRHSFunction(), DMTSSetRHSJacobian(), TSSetRHSJacobian()