mp_isend_custom Subroutine

   SUBROUTINE mp_isend_custom(msgin, dest, comm, request, tag)
      !! Non-blocking send of custom type
      TYPE(mp_type_descriptor_type), INTENT(IN)          :: msgin
      INTEGER, INTENT(IN)                                :: dest
      TYPE(mp_comm_type), INTENT(IN)                     :: comm
      TYPE(mp_request_type), INTENT(out)                 :: request
      INTEGER, INTENT(in), OPTIONAL                      :: tag

      INTEGER                                            :: ierr

#if defined(__parallel)
      CHARACTER(LEN=*), PARAMETER :: routineN = 'mp_isend_custom'
      INTEGER                                            :: my_tag
      my_tag = 0
      IF (PRESENT(tag)) my_tag = tag

      ierr = 0
      CALL mpi_isend(MPI_BOTTOM, 1, msgin%type_handle, dest, my_tag, &
                     comm%handle, request%handle, ierr)
      IF (ierr /= 0) CALL mp_stop(ierr, "mpi_isend @ "//routineN)
#else
      MARK_USED(msgin)
      MARK_USED(dest)
      MARK_USED(comm)
      MARK_USED(request)
      MARK_USED(tag)
      ierr = 1
      request = mp_request_null
      CALL mp_stop(ierr, "mp_isend called in non parallel case")
#endif
   END SUBROUTINE mp_isend_custom