DMTSGetIJacobian#

get TS Jacobian evaluation function

Synopsis#

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

Not Collective

Input Parameter#

  • dm - DM to be used with TS

Output Parameters#

  • func - Jacobian evaluation function, for calling sequence see TSSetIJacobian()

  • ctx - context for residual evaluation

Note#

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#

TS: Scalable ODE and DAE Solvers, DM, TS, DMTSSetContext(), TSSetFunction(), DMTSSetJacobian()

Level#

advanced

Location#

src/ts/utils/dmts.c

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Index of all manual pages