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amg4psblas/amgprec/impl/solver/amg_c_invt_solver_bld.f90

98 lines
3.8 KiB
Fortran

!
!
! AMG-AINV: Approximate Inverse plugin for
! AMG4PSBLAS version 1.0
!
! (C) Copyright 2020
!
! Salvatore Filippone 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 AMG4PSBLAS 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 AMG4PSBLAS 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 amg_c_invt_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
use psb_base_mod
use psb_c_invt_fact_mod ! This module contains the construction routines
use amg_c_invt_solver, amg_protect_name => amg_c_invt_solver_bld
Implicit None
! Arguments
type(psb_cspmat_type), intent(in), target :: a
Type(psb_desc_type), Intent(inout) :: desc_a
class(amg_c_invt_solver_type), intent(inout) :: sv
integer(psb_ipk_), intent(out) :: info
type(psb_cspmat_type), intent(in), target, optional :: b
class(psb_c_base_sparse_mat), intent(in), optional :: amold
class(psb_c_base_vect_type), intent(in), optional :: vmold
class(psb_i_base_vect_type), intent(in), optional :: imold
! Local variables
integer(psb_ipk_) :: n_row,n_col, nrow_a, nztota
complex(psb_spk_), pointer :: ww(:), aux(:), tx(:),ty(:)
integer(psb_ipk_) :: np,me,i, err_act, debug_unit, debug_level
type(psb_ctxt_type) :: ctxt
character(len=20) :: name='amg_c_invt_solver_bld', ch_err
info = psb_success_
call psb_erractionsave(err_act)
debug_unit = psb_get_debug_unit()
debug_level = psb_get_debug_level()
ctxt = desc_a%get_context()
call psb_info(ctxt, me, np)
if (debug_level >= psb_debug_outer_) &
& write(debug_unit,*) me,' ',trim(name),' start'
call psb_invt_fact(a,sv%fill_in,sv%inv_fill,&
& sv%thresh,sv%inv_thresh,&
& sv%w,sv%d,sv%z,desc_a,info,b)
if ((info == psb_success_) .and.present(amold)) then
call sv%w%cscnv(info,mold=amold)
if (info == psb_success_) &
& call sv%z%cscnv(info,mold=amold)
end if
if (info == psb_success_) then
call sv%dv%bld(sv%d,mold=vmold)
end if
if (info /= psb_success_) then
call psb_errpush(psb_err_internal_error_,name)
goto 9999
end if
if (debug_level >= psb_debug_outer_) &
& write(debug_unit,*) me,' ',trim(name),' end'
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine amg_c_invt_solver_bld