:orphan:
# TSPreStep
Runs the user-defined pre-step function provided with `TSSetPreStep()` 
## Synopsis
```
#include "petscts.h"  
PetscErrorCode TSPreStep(TS ts)
```
Collective


## Input Parameter

- ***ts   -*** The `TS` context obtained from `TSCreate()`





## Note
`TSPreStep()` is typically used within time stepping implementations,
so most users would not generally call this routine themselves.


## See Also
 [](ch_ts), `TS`, `TSSetPreStep()`, `TSPreStage()`, `TSPostStage()`, `TSPostStep()`

## Level
developer

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


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