# TSRKGetMultirate
Gets whether to use the interpolation-based multirate `TSRK` method 
## Synopsis
```
#include "petscts.h"   
PetscErrorCode TSRKGetMultirate(TS ts, PetscBool *use_multirate)
```
Not collective


## Input Parameter

- ***ts -*** timestepping context



## Output Parameter

- ***use_multirate -*** `PETSC_TRUE` if the multirate RK method is enabled, `PETSC_FALSE` otherwise





## See Also
 [](chapter_ts), `TSRK`, `TSRKSetMultirate()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/impls/explicit/rk/rk.c.html#TSRKGetMultirate">src/ts/impls/explicit/rk/rk.c</A>

## Implementations

<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/impls/explicit/rk/mrk.c.html#TSRKGetMultirate_RK">TSRKGetMultirate_RK in src/ts/impls/explicit/rk/mrk.c</A><BR>


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