# TSSundialsSetMaxTimeStep
Largest time step to be chosen by the adaptive controller. 
## Synopsis
```
#include "petscts.h" 
PetscErrorCode TSSundialsSetMaxTimeStep(TS ts, PetscReal maxdt)
```

## Input Parameters

- ***ts -*** the time-step context
- ***maxdt -*** lowest time step if positive, negative to deactivate





## See Also
 [](chapter_ts), `TSSundialsSetType()`, `TSSundialsSetTolerance()`,

## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/impls/implicit/sundials/sundials.c.html#TSSundialsSetMaxTimeStep">src/ts/impls/implicit/sundials/sundials.c</A>

## Implementations

<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/impls/implicit/sundials/sundials.c.html#TSSundialsSetMaxTimeStep_Sundials">TSSundialsSetMaxTimeStep_Sundials in src/ts/impls/implicit/sundials/sundials.c</A><BR>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/ts/impls/implicit/sundials/sundials.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)  
