# TSAdaptSetSafety
Set safety factors for time step adaptor 
## Synopsis
```
#include "petscts.h" 
PetscErrorCode TSAdaptSetSafety(TSAdapt adapt, PetscReal safety, PetscReal reject_safety)
```
Logically collective on adapt


## Input Parameters

- ***adapt -*** adaptive controller context
- ***safety -*** safety factor relative to target error/stability goal
- ***reject_safety -*** extra safety factor to apply if the last step was rejected



## Options Database Keys

- ***-ts_adapt_safety <safety> -*** to set safety factor
- ***-ts_adapt_reject_safety <reject_safety> -*** to set reject safety factor





## See Also
 [](chapter_ts), `TSAdapt`, `TSAdaptGetSafety()`, `TSAdaptChoose()`

## Level
intermediate

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


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


[Index of all TS routines](index.md)  
[Table of Contents for all manual pages](/docs/manualpages/index.md)  
[Index of all manual pages](/docs/manualpages/singleindex.md)  
