petsc-3.13.6 2020-09-29
TSComputeRHSJacobianConstant
Reuses a Jacobian that is time-independent.
Synopsis
#include "petscts.h"
PetscErrorCode TSComputeRHSJacobianConstant(TS ts,PetscReal t,Vec U,Mat A,Mat B,void *ctx)
Collective on TS
Input Arguments
| ts | - time stepping context
|
| t | - time at which to evaluate
|
| U | - state at which to evaluate
|
| ctx | - context
|
Output Arguments
| A | - pointer to operator
|
| B | - pointer to preconditioning matrix
|
| flg | - matrix structure flag
|
Notes
This function is intended to be passed to TSSetRHSJacobian() to evaluate the Jacobian for linear time-independent problems.
See Also
TSSetRHSFunction(), TSSetRHSJacobian(), TSComputeRHSFunctionLinear()
Level
intermediate
Location
src/ts/interface/ts.c
Examples
src/ts/tutorials/ex3.c.html
src/ts/tutorials/ex4.c.html
src/ts/tutorials/ex5.c.html
src/ts/tutorials/ex6.c.html
src/tao/unconstrained/tutorials/spectraladjointassimilation.c.html
Index of all TS routines
Table of Contents for all manual pages
Index of all manual pages