:orphan:
# DMTSGetIFunction
get `TS` implicit residual evaluation function 
## Synopsis
```
#include "petscts.h" 
PetscErrorCode DMTSGetIFunction(DM dm, TSIFunction *func, void **ctx)
```
Not Collective


## Input Parameter

- ***dm -*** `DM` to be used with `TS`



## Output Parameters

- ***func -*** function evaluation function, for calling sequence see `TSSetIFunction()`
- ***ctx -*** context for residual evaluation





## Note
`TSGetFunction()` is normally used, but it calls this function internally because the user context is actually
associated with the `DM`.


## See Also
 [](ch_ts), `TS`, `DM`, `DMTSSetContext()`, `DMTSSetFunction()`, `TSSetFunction()`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/utils/dmts.c.html#DMTSGetIFunction">src/ts/utils/dmts.c</A>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/ts/utils/dmts.c)


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