TSGetIJacobian#
Returns the implicit Jacobian at the present timestep.
Synopsis#
#include "petscts.h"  
PetscErrorCode TSGetIJacobian(TS ts, Mat *Amat, Mat *Pmat, TSIJacobianFn **f, void **ctx)
Not Collective, but parallel objects are returned if ts is parallel
Input Parameter#
Output Parameters#
- Amat - The (approximate) Jacobian of F(t,U,U_t) 
- Pmat - The matrix from which the preconditioner is constructed, often the same as - Amat
- f - The function to compute the matrices 
- ctx - User-defined context for Jacobian evaluation routine 
Note#
You can pass in NULL for any return argument you do not need.
See Also#
TS: Scalable ODE and DAE Solvers, TS, TSGetTimeStep(), TSGetRHSJacobian(), TSGetMatrices(), TSGetTime(), TSGetStepNumber()
Level#
advanced
Location#
Examples#
Index of all TS routines
Table of Contents for all manual pages
Index of all manual pages