petsc-3.5.1 2014-08-06
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DMTSGetIJacobian

get TS Jacobian evaluation function

Synopsis

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

Input Argument

dm -DM to be used with TS

Output Arguments

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

DMTSSetContext(), TSSetFunction(), DMTSSetJacobian()

Level:advanced
Location:
src/ts/utils/dmts.c
Index of all TS routines
Table of Contents for all manual pages
Index of all manual pages