ESMF_MeshCreateDual Function

    function ESMF_MeshCreateDual(mesh, rc)
!
!
! !RETURN VALUE:
    type(ESMF_Mesh)                            :: ESMF_MeshCreateDual

! !ARGUMENTS:
    type(ESMF_Mesh),     intent(in)            :: mesh
    integer,             intent(out), optional :: rc
!
! !DESCRIPTION:
!  Create the dual of an existing mesh.
!
!   \begin{description}
!   \item [mesh]
!         The source Mesh.
!   \item [{[rc]}]
!         Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
!   \end{description}
!
!EOPI
!------------------------------------------------------------------------------
    integer :: localrc
    type(ESMF_MeshStatus_Flag) :: status
    integer :: numNode, numElem

    ! Init localrc
    localrc = ESMF_SUCCESS

    ! Check input classes
    ESMF_INIT_CHECK_DEEP(ESMF_MeshGetInit, mesh, rc)

    ! If mesh has not been fully created
    call C_ESMC_MeshGetStatus(mesh, status)
    if (status .ne. ESMF_MESHSTATUS_COMPLETE) then
       call ESMF_LogSetError(rcToCheck=ESMF_RC_OBJ_WRONG, &
                 msg="- the mesh has not been fully created", &
                 ESMF_CONTEXT, rcToReturn=rc)
       return
    endif

    ! Call into C
    call C_ESMC_MeshCreateDual(mesh, ESMF_MeshCreateDual, localrc)
    if (ESMF_LogFoundError(localrc, ESMF_ERR_PASSTHRU, &
               ESMF_CONTEXT, rcToReturn=rc)) return

    ! these should be set inside MeshCap
    ! Create node distgrid and get number of nodes
    call C_ESMC_MeshCreateNodeDistGrid(ESMF_MeshCreateDual, localrc)
          if (ESMF_LogFoundError(localrc, ESMF_ERR_PASSTHRU, &
               ESMF_CONTEXT, rcToReturn=rc)) return

    call C_ESMC_MeshCreateElemDistGrid(ESMF_MeshCreateDual, localrc)
    if (ESMF_LogFoundError(localrc, ESMF_ERR_PASSTHRU, &
      ESMF_CONTEXT, rcToReturn=rc)) return

    ! Set as created
    ESMF_INIT_SET_CREATED(ESMF_MeshCreateDual)

    if (present(rc)) rc=ESMF_SUCCESS
    return

end function ESMF_MeshCreateDual