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psblas3/prec/psb_s_ainv_tools_mod.f90

133 lines
5.9 KiB
Fortran

!
! Parallel Sparse BLAS version 3.5
! (C) Copyright 2006-2018
! Salvatore Filippone
! Alfredo Buttari
!
! 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.
!
! Moved here from AMG-AINV, original copyright below.
!
!
! 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.
!
!
!
!
!
!
!
module psb_s_ainv_tools_mod
interface sp_drop
subroutine psb_s_sp_drop(idiag,nzrmax,sp_thresh,nz,iz,valz,info)
use psb_base_mod, only : psb_spk_, psb_ipk_
implicit none
real(psb_spk_), intent(in) :: sp_thresh
integer(psb_ipk_), intent(in) :: idiag, nzrmax
integer(psb_ipk_), intent(inout) :: nz
integer(psb_ipk_), intent(inout) :: iz(:)
real(psb_spk_), intent(inout) :: valz(:)
integer(psb_ipk_), intent(out) :: info
end subroutine psb_s_sp_drop
end interface
interface rwclip
subroutine psb_s_rwclip(nz,ia,ja,val,imin,imax,jmin,jmax)
use psb_base_mod, only : psb_spk_, psb_ipk_
implicit none
integer(psb_ipk_), intent(inout) :: nz
integer(psb_ipk_), intent(inout) :: ia(*), ja(*)
real(psb_spk_), intent(inout) :: val(*)
integer(psb_ipk_), intent(in) :: imin,imax,jmin,jmax
end subroutine psb_s_rwclip
end interface
interface sparsify
subroutine psb_s_sparsify(idiag,nzrmax,sp_thresh,n,zw,nz,iz,valz,info, &
& istart,iheap,ikr)
use psb_base_mod, only : psb_spk_, psb_ipk_, psb_i_heap
implicit none
real(psb_spk_), intent(in) :: sp_thresh
integer(psb_ipk_), intent(in) :: idiag, n, nzrmax
real(psb_spk_), intent(inout) :: zw(:)
integer(psb_ipk_), intent(out) :: nz
integer(psb_ipk_), intent(out) :: iz(:)
real(psb_spk_), intent(out) :: valz(:)
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_), intent(in), optional :: istart
type(psb_i_heap), optional :: iheap
integer(psb_ipk_), optional :: ikr(:)
end subroutine psb_s_sparsify
subroutine psb_s_sparsify_list(idiag,nzrmax,sp_thresh,n,zw,nz,iz,valz,lhead,listv,ikr,info)
use psb_base_mod, only : psb_spk_, psb_ipk_
implicit none
real(psb_spk_), intent(in) :: sp_thresh
integer(psb_ipk_), intent(in) :: idiag, n, nzrmax
real(psb_spk_), intent(inout) :: zw(:)
integer(psb_ipk_), intent(out) :: nz
integer(psb_ipk_), intent(out) :: iz(:)
real(psb_spk_), intent(out) :: valz(:)
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_), intent(inout) :: lhead, listv(:)
integer(psb_ipk_) :: ikr(:)
end subroutine psb_s_sparsify_list
end interface
end module psb_s_ainv_tools_mod