receive_character Subroutine

  subroutine receive_character (s, src, tag)
    implicit none
    character(*), intent (out) :: s
    integer, intent (in) :: src
    integer, intent (in), optional :: tag
# ifdef MPI
    integer :: ierror
    integer :: tagp
    integer, dimension (mp_status_size) :: status
    tagp = 0
    if (present(tag)) tagp = tag
!$OMP MASTER
    call time_message(.false., time_mp_ptp, ' MPI Point-to-point')
!$OMP END MASTER
    call mpi_recv (s, len(s), MPI_CHARACTER, src, tagp, mp_comm, &
         status, ierror)
!$OMP MASTER
    call time_message(.false., time_mp_ptp, ' MPI Point-to-point')
!$OMP END MASTER
# else
    call mp_abort ("receive")
    UNUSED_DUMMY(src); UNUSED_DUMMY(tag)
    s = ''
# endif
  end subroutine receive_character