# TSSetUseSplitRHSFunction
Use the split RHSFunction when a multirate method is used. 
## Synopsis
```
#include "petscts.h"  
PetscErrorCode TSSetUseSplitRHSFunction(TS ts, PetscBool use_splitrhsfunction)
```
Logically collective


## Input Parameters

- ***ts -*** timestepping context
- ***use_splitrhsfunction -*** `PETSC_TRUE` indicates that the split RHSFunction will be used



## Options Database Key

- ***-ts_use_splitrhsfunction -*** <true,false>





## Note
This is only useful for multirate methods


## See Also
 [](chapter_ts), `TS`, `TSGetUseSplitRHSFunction()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/interface/ts.c.html#TSSetUseSplitRHSFunction">src/ts/interface/ts.c</A>


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