# TSSundialsSetType
Sets the method that `TSSUNDIALS` will use for integration.
## Synopsis
```
#include "petscts.h"
PetscErrorCode TSSundialsSetType(TS ts, TSSundialsLmmType type)
```
Logically Collective
## Input Parameters
- ***ts -*** the time-step context
- ***type -*** one of `SUNDIALS_ADAMS` or `SUNDIALS_BDF`
## See Also
[](chapter_ts), `TSSundialsGetIterations()`, `TSSundialsSetMaxl()`,
`TSSundialsSetLinearTolerance()`, `TSSundialsSetGramSchmidtType()`, `TSSundialsSetTolerance()`,
`TSSundialsGetIterations()`, `TSSundialsSetType()`,
`TSSundialsSetLinearTolerance()`, `TSSundialsSetTolerance()`, `TSSundialsGetPC()`,
`TSSetExactFinalTime()`
## Level
intermediate
## Location
src/ts/impls/implicit/sundials/sundials.c
## Implementations
TSSundialsSetType_Sundials in src/ts/impls/implicit/sundials/sundials.c
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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)
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