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# 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

src/dm/dt/interface/dtds.c

Index of all DT routines
Table of Contents for all manual pages
Index of all manual pages