mp_environ_c Subroutine

   SUBROUTINE mp_environ_c(numtask, dims, task_coor, groupid)

      INTEGER, INTENT(OUT)                     :: numtask, dims(2), &
                                                  task_coor(2)
      INTEGER, INTENT(IN)                      :: groupid

      INTEGER                                  :: ierr
#if defined(__parallel)
      LOGICAL, DIMENSION(2)                    :: periods
#endif

      ierr = 0
      numtask = 1
      task_coor = 0
      dims = 1
#if defined(__parallel)
      CALL mpi_comm_size(groupid, numtask, ierr)
      IF (ierr /= 0) CALL mp_stop(ierr, "mpi_comm_size @ mp_environ_c")

      CALL mpi_cart_get(groupid, 2, dims, periods, task_coor, ierr)
      IF (ierr /= 0) CALL mp_stop(ierr, "mpi_cart_get @ mp_environ_c")
#else
      MARK_USED(groupid)
#endif

   END SUBROUTINE mp_environ_c