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153 lines
4.8 KiB
Fortran
153 lines
4.8 KiB
Fortran
!
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!
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! AMG4PSBLAS version 1.0
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! Algebraic Multigrid Package
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! based on PSBLAS (Parallel Sparse BLAS version 3.7)
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!
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! (C) Copyright 2021
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!
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! Salvatore Filippone
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! Pasqua D'Ambra
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! Fabio Durastante
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!
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! Redistribution and use in source and binary forms, with or without
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! modification, are permitted provided that the following conditions
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! are met:
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! 1. Redistributions of source code must retain the above copyright
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! notice, this list of conditions and the following disclaimer.
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! 2. Redistributions in binary form must reproduce the above copyright
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! notice, this list of conditions, and the following disclaimer in the
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! documentation and/or other materials provided with the distribution.
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! 3. The name of the AMG4PSBLAS group or the names of its contributors may
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! not be used to endorse or promote products derived from this
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! software without specific written permission.
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!
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! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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! ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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! TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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! PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
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! BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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! POSSIBILITY OF SUCH DAMAGE.
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!
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!
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subroutine amg_s_base_onelev_setsv(lev,val,info,pos)
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use psb_base_mod
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use amg_s_prec_mod, amg_protect_name => amg_s_base_onelev_setsv
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implicit none
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! Arguments
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class(amg_s_onelev_type), target, intent(inout) :: lev
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class(amg_s_base_solver_type), intent(in) :: val
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integer(psb_ipk_), intent(out) :: info
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character(len=*), optional, intent(in) :: pos
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! Local variables
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integer(psb_ipk_) :: ipos_
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character(len=*), parameter :: name='amg_base_onelev_setsv'
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info = psb_success_
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if (present(pos)) then
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select case(psb_toupper(trim(pos)))
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case('PRE')
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ipos_ = amg_smooth_pre_
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case('POST')
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ipos_ = amg_smooth_post_
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case default
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ipos_ = amg_smooth_both_
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end select
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else
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ipos_ = amg_smooth_both_
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end if
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if ((ipos_ == amg_smooth_pre_).or.(ipos_ == amg_smooth_both_)) then
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if (allocated(lev%sm)) then
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if (allocated(lev%sm%sv)) then
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if (.not.same_type_as(lev%sm%sv,val)) then
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call lev%sm%sv%free(info)
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if (info == 0) deallocate(lev%sm%sv,stat=info)
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if (info /= 0) then
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info = 3111
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return
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end if
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end if
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end if
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if (.not.allocated(lev%sm%sv)) then
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#ifdef HAVE_MOLD
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allocate(lev%sm%sv,mold=val,stat=info)
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#else
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allocate(lev%sm%sv,source=val,stat=info)
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#endif
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if (info /= 0) then
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info = 3111
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return
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end if
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end if
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call lev%sm%sv%default()
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else
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info = 3111
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write(psb_err_unit,*) name,&
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&': Error: uninitialized preconditioner component,',&
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&' should call amg_PRECINIT/amg_PRECSET'
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return
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end if
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end if
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!
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! If POS was not specified and therefore we have amg_smooth_both_
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! we need to update sm2a *only* if it was already allocated,
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! otherwise it is not needed (since we have just fixed %sm in the
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! pre section).
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!
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if ((ipos_ == amg_smooth_post_).or. &
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((ipos_ == amg_smooth_both_).and.(allocated(lev%sm2a)))) then
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if (allocated(lev%sm2a)) then
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if (allocated(lev%sm2a%sv)) then
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if (.not.same_type_as(lev%sm2a%sv,val)) then
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call lev%sm2a%sv%free(info)
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if (info == 0) deallocate(lev%sm2a%sv,stat=info)
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if (info /= 0) then
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info = 3111
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return
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end if
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end if
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end if
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if (.not.allocated(lev%sm2a%sv)) then
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#ifdef HAVE_MOLD
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allocate(lev%sm2a%sv,mold=val,stat=info)
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#else
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allocate(lev%sm2a%sv,source=val,stat=info)
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#endif
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if (info /= 0) then
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info = 3111
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return
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end if
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end if
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call lev%sm2a%sv%default()
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else
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info = 3111
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write(psb_err_unit,*) name,&
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&': Error: uninitialized preconditioner component,',&
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&' should call amg_PRECINIT/amg_PRECSET'
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return
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end if
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end if
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end subroutine amg_s_base_onelev_setsv
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