:orphan:
# PetscDSGetJetDegree
Returns the highest derivative for this field equation, or the k-jet that the discretization needs to tabulate. 
## Synopsis
```
#include "petscds.h" 
PetscErrorCode PetscDSGetJetDegree(PetscDS ds, PetscInt f, PetscInt *k)
```
Not Collective


## Input Parameters

- ***ds -*** The `PetscDS` object
- ***f  -*** The field number



## Output Parameter

- ***k  -*** The highest derivative we need to tabulate





## See Also
 `PetscDS`, `PetscDSSetJetDegree()`, `PetscDSSetDiscretization()`, `PetscDSAddDiscretization()`, `PetscDSGetNumFields()`, `PetscDSCreate()`

## Level
developer

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/dt/interface/dtds.c.html#PetscDSGetJetDegree">src/dm/dt/interface/dtds.c</A>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/dm/dt/interface/dtds.c)


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