DMTSGetIJacobian

get TS Jacobian evaluation function from a DMTS

Synopsis

#include "petscts.h" 
PetscErrorCode DMTSGetIJacobian(DM dm, TSIJacobianFn **func, void **ctx)

Not Collective

Input Parameter

• dm - DM to be used with TS

Output Parameters

• func - Jacobian evaluation function, for calling sequence see TSIJacobianFn

• ctx - context for residual evaluation

Note

TSGetIJacobian() 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

TS: Scalable ODE and DAE Solvers, DMTS, DM, TS, DMTSSetIJacobian(), TSIJacobianFn

Level

developer

Location

src/ts/utils/dmts.c

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