mp_irecv_custom Subroutine

   SUBROUTINE mp_irecv_custom(msgout, source, comm, request, tag)
      !! Non-blocking receive of vector data
      TYPE(mp_type_descriptor_type), INTENT(INOUT)       :: msgout
      INTEGER, INTENT(IN)                                :: source
      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_irecv_custom'
      INTEGER                                            :: my_tag
      ierr = 0
      my_tag = 0

      IF (PRESENT(tag)) my_tag = tag

      CALL mpi_irecv(MPI_BOTTOM, 1, msgout%type_handle, source, my_tag, &
                     comm%handle, request%handle, ierr)
      IF (ierr /= 0) CALL mp_stop(ierr, "mpi_irecv @ "//routineN)
#else
      MARK_USED(msgout)
      MARK_USED(source)
      MARK_USED(comm)
      MARK_USED(request)
      MARK_USED(tag)
      ierr = 1
      request = mp_request_null
      DBCSR_ABORT("mp_irecv called in non parallel case")
#endif
   END SUBROUTINE mp_irecv_custom