:orphan:
# TSComputeRHSFunction
Evaluates the right-hand-side function for a `TS` 
## Synopsis
```
#include "petscts.h"  
PetscErrorCode TSComputeRHSFunction(TS ts, PetscReal t, Vec U, Vec y)
```
Collective


## Input Parameters

- ***ts -*** the `TS` context
- ***t -*** current time
- ***U -*** state vector



## Output Parameter

- ***y -*** right hand side





## Note
Most users should not need to explicitly call this routine, as it
is used internally within the nonlinear solvers.


## See Also
 [](ch_ts), `TS`, `TSSetRHSFunction()`, `TSComputeIFunction()`

## Level
developer

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


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[Index of all TS routines](index.md)  
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