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psblas3/base/internals/psi_crea_bnd_elem.f90

122 lines
3.6 KiB
Fortran

!!$
!!$ Parallel Sparse BLAS v2.0
!!$ (C) Copyright 2006 Salvatore Filippone University of Rome Tor Vergata
!!$ Alfredo Buttari University of Rome Tor Vergata
!!$
!!$ Redistribution and use in source and binary forms, with or without
!!$ modification, are permitted provided that the following conditions
!!$ are met:
!!$ 1. Redistributions of source code must retain the above copyright
!!$ notice, this list of conditions and the following disclaimer.
!!$ 2. Redistributions in binary form must reproduce the above copyright
!!$ notice, this list of conditions, and the following disclaimer in the
!!$ documentation and/or other materials provided with the distribution.
!!$ 3. The name of the PSBLAS group or the names of its contributors may
!!$ not be used to endorse or promote products derived from this
!!$ software without specific written permission.
!!$
!!$ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
!!$ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
!!$ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
!!$ PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
!!$ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
!!$ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
!!$ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
!!$ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
!!$ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
!!$ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
!!$ POSSIBILITY OF SUCH DAMAGE.
!!$
!!$
subroutine psi_crea_bnd_elem(bndel,desc_a,info)
use psi_mod, psb_protect_name => psi_crea_bnd_elem
use psb_realloc_mod
use psb_descriptor_type
use psb_error_mod
use psb_serial_mod
implicit none
integer, allocatable :: bndel(:)
type(psb_desc_type) :: desc_a
integer, intent(out) :: info
integer, allocatable :: work(:)
integer :: i, j, nr, ns, k, irv, err_act
character(len=20) :: name
info = 0
name='psi_crea_bnd_elem'
call psb_erractionsave(err_act)
allocate(work(size(desc_a%halo_index)),stat=info)
if (info /= 0 ) then
info = 4000
call psb_errpush(info,name)
goto 9999
end if
i=0
j=1
do while(desc_a%halo_index(j) /= -1)
nr = desc_a%halo_index(j+1)
ns = desc_a%halo_index(j+1+nr+1)
do k=1, ns
i = i + 1
work(i) = desc_a%halo_index(j+1+nr+1+k)
enddo
j = j + 1 + ns + 1 + nr + 1
enddo
if (i>0) then
call psb_msort(work(1:i))
j=1
irv = work(1)
do k=2, i
if (work(k) /= irv) then
irv = work(k)
j = j + 1
work(j) = work(k)
endif
enddo
else
j = 0
endif
if (.true.) then
if (j>0) then
call psb_realloc(j,bndel,info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='Allocate')
goto 9999
end if
bndel(1:j) = work(1:j)
else
if (allocated(bndel)) then
deallocate(bndel)
end if
end if
else
call psb_realloc(j+1,bndel,info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='Allocate')
goto 9999
end if
bndel(1:j) = work(1:j)
bndel(j+1) = -1
endif
deallocate(work)
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 psi_crea_bnd_elem