@ -48,6 +48,7 @@ module psb_desc_const_mod
! The following are bit fields.
integer(psb_ipk_), parameter :: psb_swap_send_=1, psb_swap_recv_=2
integer(psb_ipk_), parameter :: psb_swap_sync_=4, psb_swap_mpi_=8
integer(psb_ipk_), parameter :: psb_swap_persistent_=16
! Choice among lists on which to base data exchange
integer(psb_ipk_), parameter :: psb_no_comm_=-1
integer(psb_ipk_), parameter :: psb_comm_halo_=1, psb_comm_ovr_=2