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amg4psblas/mlprec/impl/level/mld_c_base_onelev_setsv.F90

155 lines
5.0 KiB
Fortran

!
!
! MLD2P4 version 2.1
! MultiLevel Domain Decomposition Parallel Preconditioners Package
! based on PSBLAS (Parallel Sparse BLAS version 3.4)
!
! (C) Copyright 2008, 2010, 2012, 2015, 2017
!
! Salvatore Filippone Cranfield University
! Ambra Abdullahi Hassan University of Rome Tor Vergata
! Alfredo Buttari CNRS-IRIT, Toulouse
! Pasqua D'Ambra ICAR-CNR, Naples
! Daniela di Serafino University of Campania "L. Vanvitelli", Caserta
!
! 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 MLD2P4 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 MLD2P4 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 mld_c_base_onelev_setsv(lev,val,info,pos)
use psb_base_mod
use mld_c_prec_mod, mld_protect_name => mld_c_base_onelev_setsv
implicit none
! Arguments
class(mld_c_onelev_type), target, intent(inout) :: lev
class(mld_c_base_solver_type), intent(in) :: val
integer(psb_ipk_), intent(out) :: info
character(len=*), optional, intent(in) :: pos
! Local variables
integer(psb_ipk_) :: ipos_
character(len=*), parameter :: name='mld_base_onelev_setsv'
info = psb_success_
if (present(pos)) then
select case(psb_toupper(trim(pos)))
case('PRE')
ipos_ = mld_smooth_pre_
case('POST')
ipos_ = mld_smooth_post_
case default
ipos_ = mld_smooth_both_
end select
else
ipos_ = mld_smooth_both_
end if
if ((ipos_ == mld_smooth_pre_).or.(ipos_ == mld_smooth_both_)) then
if (allocated(lev%sm)) then
if (allocated(lev%sm%sv)) then
if (.not.same_type_as(lev%sm%sv,val)) then
call lev%sm%sv%free(info)
deallocate(lev%sm%sv,stat=info)
if (info /= 0) then
info = 3111
return
end if
end if
end if
if (.not.allocated(lev%sm%sv)) then
#ifdef HAVE_MOLD
allocate(lev%sm%sv,mold=val,stat=info)
#else
allocate(lev%sm%sv,source=val,stat=info)
#endif
if (info /= 0) then
info = 3111
return
end if
end if
call lev%sm%sv%default()
else
info = 3111
write(psb_err_unit,*) name,&
&': Error: uninitialized preconditioner component,',&
&' should call MLD_PRECINIT/MLD_PRECSET'
return
end if
end if
!
! If POS was not specified and therefore we have mld_smooth_both_
! we need to update sm2a *only* if it was already allocated,
! otherwise it is not needed (since we have just fixed %sm in the
! pre section).
!
if ((ipos_ == mld_smooth_post_).or. &
((ipos_ == mld_smooth_both_).and.(allocated(lev%sm2a)))) then
if (allocated(lev%sm2a)) then
if (allocated(lev%sm2a%sv)) then
if (.not.same_type_as(lev%sm2a%sv,val)) then
call lev%sm2a%sv%free(info)
deallocate(lev%sm2a%sv,stat=info)
if (info /= 0) then
info = 3111
return
end if
end if
end if
if (.not.allocated(lev%sm2a%sv)) then
#ifdef HAVE_MOLD
allocate(lev%sm2a%sv,mold=val,stat=info)
#else
allocate(lev%sm2a%sv,source=val,stat=info)
#endif
if (info /= 0) then
info = 3111
return
end if
end if
call lev%sm2a%sv%default()
else
info = 3111
write(psb_err_unit,*) name,&
&': Error: uninitialized preconditioner component,',&
&' should call MLD_PRECINIT/MLD_PRECSET'
return
end if
end if
end subroutine mld_c_base_onelev_setsv