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psblas3/base/tools/psb_get_overlap.f90

71 lines
1.3 KiB
Fortran

subroutine psb_get_ovrlap(ovrel,desc,info)
use psb_descriptor_type
use psb_realloc_mod
use psb_error_mod
implicit none
integer, allocatable :: ovrel(:)
type(psb_desc_type), intent(in) :: desc
integer, intent(out) :: info
integer :: i,j, err_act
character(len=20) :: name
info = 0
name='psi_get_overlap'
call psb_erractionsave(err_act)
if (.not.psb_is_asb_desc(desc)) then
info = 1122
call psb_errorpush(info,name)
goto 9999
end if
i=0
j=1
do while(desc%ovrlap_elem(j) /= -1)
i = i +1
j = j + 2
enddo
if (i > 0) then
allocate(ovrel(i),stat=info)
if (info /= 0 ) then
info = 4000
call psb_errpush(info,name)
goto 9999
end if
i=0
j=1
do while(desc%ovrlap_elem(j) /= -1)
i = i +1
ovrel(i) = desc%ovrlap_elem(j)
j = j + 2
enddo
else
if (allocated(ovrel)) then
deallocate(ovrel,stat=info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='Deallocate')
goto 9999
end if
end if
end if
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act.eq.psb_act_abort_) then
call psb_error()
return
end if
return
end subroutine psb_get_ovrlap