petsc-3.14.6 2021-03-30
DMTSSetRHSFunction
set TS explicit residual evaluation function
Synopsis
#include "petscts.h"
PetscErrorCode DMTSSetRHSFunction(DM dm,TSRHSFunction func,void *ctx)
Not Collective
Input Arguments
| dm | - DM to be used with TS
|
| func | - RHS function evaluation routine
|
| ctx | - context for residual evaluation
|
Calling sequence of func
PetscErrorCode func(TS ts,PetscReal t,Vec u,Vec F,void *ctx);
| ts | - timestep context
|
| t | - current timestep
|
| u | - input vector
|
| F | - function vector
|
| ctx | - [optional] user-defined function context
|
Note
TSSetRSHFunction() 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 residual.
See Also
DMTSSetContext(), TSSetRHSFunction(), 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