TSGetRHSJacobian

 Returns the Jacobian J at the present timestep.

Synopsis

#include "petscts.h"  
int TSGetRHSJacobian(TS ts,Mat *J,Mat *M,void **ctx)
Not Collective, but parallel objects are returned if TS is parallel

Input Parameter

ts -The TS context obtained from TSCreate()

Output Parameters

J - The Jacobian J of F, where U_t = F(U,t)
M - The preconditioner matrix, usually the same as J
ctx - User-defined context for Jacobian evaluation routine

Notes: You can pass in PETSC_NULL for any return argument you do not need.

Contributed by: Matthew Knepley

See Also

TSGetTimeStep(), TSGetRHSMatrix(), TSGetTime(), TSGetTimeStepNumber()

Keywords

TS, timestep, get, matrix, Jacobian

Level:intermediate
Location:src/ts/interface/ts.c
Index of all TS routines
Table of Contents for all manual pages
Index of all manual pages