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571 lines
14 KiB
Fortran
571 lines
14 KiB
Fortran
!
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! Parallel Sparse BLAS version 3.5
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! (C) Copyright 2006, 2010, 2015, 2017
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! Salvatore Filippone Cranfield University
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! Alfredo Buttari CNRS-IRIT, Toulouse
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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 PSBLAS 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 PSBLAS 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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! File: psb_spdot_srtd
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! Subroutine: X_nspaxpby
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! Computes Z = alpha*X + beta*Y
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! where X,Y and Z are all sparse vectors
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!
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! Function: X_spdot_srtd
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! Computes dot product (V1,V2)
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! where both V1 and V2 are sparse vectors; assumes the
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! vectors' entries are sorted in increasing order.
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!
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!
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!
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subroutine psb_s_nspaxpby(nz,iz,z,alpha, nx, ix, x, beta, ny,iy,y,info)
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use psb_const_mod
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integer(psb_ipk_), intent(out) :: nz
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integer(psb_ipk_), intent(out) :: iz(:)
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real(psb_spk_), intent (out) :: z(:)
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integer(psb_ipk_), intent(in) :: nx, ny
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integer(psb_ipk_), intent(in) :: ix(:), iy(:)
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real(psb_spk_), intent (in) :: x(:), y(:)
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real(psb_spk_), intent (in) :: alpha, beta
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_) :: i,j,k, ipx, ipy, isz
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real(psb_spk_) :: acc
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info=psb_success_
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nz = 0
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ipx = 1
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ipy = 1
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isz = min(size(iz),size(z))
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if (beta == szero) then
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if (alpha == szero) return
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nz = nx
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if (nz > isz) then
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info = -1
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return
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endif
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iz(1:nz) = ix(1:nx)
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z(1:nz) = alpha*x(1:nx)
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else if (alpha == szero) then
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nz = ny
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if (nz > isz) then
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info = -1
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return
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endif
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iz(1:nz) = iy(1:ny)
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z(1:nz) = beta*y(1:ny)
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else
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do
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if (ipx > nx) exit
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if (ipy > ny) exit
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if (ix(ipx) == iy(ipy)) then
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acc = beta*y(ipy) + alpha*x(ipx)
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nz = nz + 1
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if (nz > isz) then
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info = -1
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return
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endif
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iz(nz) = ix(ipx)
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z(nz) = acc
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ipx = ipx + 1
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ipy = ipy + 1
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else
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nz = nz + 1
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if (nz > isz) then
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info = -1
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return
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endif
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if (ix(ipx) < iy(ipy)) then
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iz(nz) = ix(ipx)
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z(nz) = alpha*x(ipx)
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ipx = ipx + 1
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else
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iz(nz) = iy(ipy)
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z(nz) = beta*y(ipy)
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ipy = ipy + 1
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end if
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end if
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end do
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do
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if (ipx > nx) exit
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nz = nz + 1
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if (nz > isz) then
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info = -1
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return
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endif
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iz(nz) = ix(ipx)
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z(nz) = alpha*x(ipx)
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ipx = ipx + 1
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end do
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do
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if (ipy > ny) exit
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nz = nz + 1
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if (nz > isz) then
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info = -1
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return
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endif
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iz(nz) = iy(ipy)
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z(nz) = beta*y(ipy)
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ipy = ipy + 1
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end do
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end if
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end subroutine psb_s_nspaxpby
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function psb_s_spdot_srtd(nv1,iv1,v1,nv2,iv2,v2) result(dot)
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use psb_const_mod
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integer(psb_ipk_), intent(in) :: nv1,nv2
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integer(psb_ipk_), intent(in) :: iv1(*), iv2(*)
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real(psb_spk_), intent(in) :: v1(*),v2(*)
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real(psb_spk_) :: dot
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integer(psb_ipk_) :: i,j,k, ip1, ip2
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dot = szero
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ip1 = 1
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ip2 = 1
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do
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if (ip1 > nv1) exit
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if (ip2 > nv2) exit
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if (iv1(ip1) == iv2(ip2)) then
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dot = dot + v1(ip1)*v2(ip2)
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ip1 = ip1 + 1
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ip2 = ip2 + 1
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else if (iv1(ip1) < iv2(ip2)) then
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ip1 = ip1 + 1
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else
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ip2 = ip2 + 1
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end if
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end do
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end function psb_s_spdot_srtd
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subroutine psb_d_nspaxpby(nz,iz,z,alpha, nx, ix, x, beta, ny,iy,y,info)
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use psb_const_mod
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integer(psb_ipk_), intent(out) :: nz
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integer(psb_ipk_), intent(out) :: iz(:)
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real(psb_dpk_), intent (out) :: z(:)
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integer(psb_ipk_), intent(in) :: nx, ny
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integer(psb_ipk_), intent(in) :: ix(:), iy(:)
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real(psb_dpk_), intent (in) :: x(:), y(:)
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real(psb_dpk_), intent (in) :: alpha, beta
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_) :: i,j,k, ipx, ipy, isz
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real(psb_dpk_) :: acc
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info = psb_success_
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nz = 0
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ipx = 1
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ipy = 1
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isz = min(size(iz),size(z))
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if (beta == dzero) then
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if (alpha == dzero) return
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nz = nx
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if (nz > isz) then
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info = -1
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return
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endif
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iz(1:nz) = ix(1:nx)
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z(1:nz) = alpha*x(1:nx)
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else if (alpha == dzero) then
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nz = ny
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if (nz > isz) then
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info = -1
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return
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endif
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iz(1:nz) = iy(1:ny)
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z(1:nz) = beta*y(1:ny)
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else
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do
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if (ipx > nx) exit
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if (ipy > ny) exit
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if (ix(ipx) == iy(ipy)) then
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acc = beta*y(ipy) + alpha*x(ipx)
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nz = nz + 1
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if (nz > isz) then
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info = -1
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return
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endif
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iz(nz) = ix(ipx)
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z(nz) = acc
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ipx = ipx + 1
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ipy = ipy + 1
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else
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nz = nz + 1
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if (nz > isz) then
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info = -1
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return
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endif
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if (ix(ipx) < iy(ipy)) then
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iz(nz) = ix(ipx)
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z(nz) = alpha*x(ipx)
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ipx = ipx + 1
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else
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iz(nz) = iy(ipy)
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z(nz) = beta*y(ipy)
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ipy = ipy + 1
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end if
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end if
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end do
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do
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if (ipx > nx) exit
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nz = nz + 1
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if (nz > isz) then
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info = -1
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return
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endif
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iz(nz) = ix(ipx)
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z(nz) = alpha*x(ipx)
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ipx = ipx + 1
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end do
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do
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if (ipy > ny) exit
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nz = nz + 1
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if (nz > isz) then
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info = -1
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return
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endif
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iz(nz) = iy(ipy)
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z(nz) = beta*y(ipy)
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ipy = ipy + 1
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end do
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end if
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end subroutine psb_d_nspaxpby
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function psb_d_spdot_srtd(nv1,iv1,v1,nv2,iv2,v2) result(dot)
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use psb_const_mod
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integer(psb_ipk_), intent(in) :: nv1,nv2
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integer(psb_ipk_), intent(in) :: iv1(*), iv2(*)
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real(psb_dpk_), intent(in) :: v1(*), v2(*)
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real(psb_dpk_) :: dot
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integer(psb_ipk_) :: i,j,k, ip1, ip2, im1, im2, ix1, ix2
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dot = dzero
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ip1 = 1
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ip2 = 1
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if (nv1 == 0) return
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if (nv2 == 0) return
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im1 = iv1(nv1)
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im2 = iv2(nv2)
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ix1 = iv1(ip1)
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ix2 = iv2(ip2)
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do
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if (ix1>im2) exit
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if (ix2>im1) exit
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if (ix1 == ix2) then
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dot = dot + v1(ip1)*v2(ip2)
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ip1 = ip1 + 1
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if (ip1 > nv1) exit
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ix1 = iv1(ip1)
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ip2 = ip2 + 1
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if (ip2 > nv2) exit
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ix2 = iv2(ip2)
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else if (ix1 < ix2) then
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ip1 = ip1 + 1
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if (ip1 > nv1) exit
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ix1 = iv1(ip1)
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else
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ip2 = ip2 + 1
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if (ip2 > nv2) exit
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ix2 = iv2(ip2)
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end if
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end do
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end function psb_d_spdot_srtd
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subroutine psb_c_nspaxpby(nz,iz,z,alpha, nx, ix, x, beta, ny,iy,y,info)
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use psb_const_mod
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integer(psb_ipk_), intent(out) :: nz
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integer(psb_ipk_), intent(out) :: iz(:)
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complex(psb_spk_), intent (out) :: z(:)
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integer(psb_ipk_), intent(in) :: nx, ny
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integer(psb_ipk_), intent(in) :: ix(:), iy(:)
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complex(psb_spk_), intent (in) :: x(:), y(:)
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complex(psb_spk_), intent (in) :: alpha, beta
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_) :: i,j,k, ipx, ipy, isz
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complex(psb_spk_) :: acc
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info=psb_success_
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nz = 0
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ipx = 1
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ipy = 1
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isz = min(size(iz),size(z))
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if (beta == czero) then
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if (alpha == czero) return
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nz = nx
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if (nz > isz) then
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info = -1
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return
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endif
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iz(1:nz) = ix(1:nx)
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z(1:nz) = alpha*x(1:nx)
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else if (alpha == czero) then
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nz = ny
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if (nz > isz) then
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info = -1
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return
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endif
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iz(1:nz) = iy(1:ny)
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z(1:nz) = beta*y(1:ny)
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else
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do
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if (ipx > nx) exit
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if (ipy > ny) exit
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if (ix(ipx) == iy(ipy)) then
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acc = beta*y(ipy) + alpha*x(ipx)
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nz = nz + 1
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if (nz > isz) then
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info = -1
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return
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endif
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iz(nz) = ix(ipx)
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z(nz) = acc
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ipx = ipx + 1
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ipy = ipy + 1
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else
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nz = nz + 1
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if (nz > isz) then
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info = -1
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return
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endif
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if (ix(ipx) < iy(ipy)) then
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iz(nz) = ix(ipx)
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z(nz) = alpha*x(ipx)
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ipx = ipx + 1
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else
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iz(nz) = iy(ipy)
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z(nz) = beta*y(ipy)
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ipy = ipy + 1
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end if
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end if
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end do
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do
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if (ipx > nx) exit
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nz = nz + 1
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if (nz > isz) then
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info = -1
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return
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endif
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iz(nz) = ix(ipx)
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z(nz) = alpha*x(ipx)
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ipx = ipx + 1
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end do
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do
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if (ipy > ny) exit
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nz = nz + 1
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if (nz > isz) then
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info = -1
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return
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endif
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iz(nz) = iy(ipy)
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z(nz) = beta*y(ipy)
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ipy = ipy + 1
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end do
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end if
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end subroutine psb_c_nspaxpby
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function psb_c_spdot_srtd(nv1,iv1,v1,nv2,iv2,v2) result(dot)
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use psb_const_mod
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integer(psb_ipk_), intent(in) :: nv1,nv2
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integer(psb_ipk_), intent(in) :: iv1(*), iv2(*)
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complex(psb_spk_), intent(in) :: v1(*),v2(*)
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complex(psb_spk_) :: dot
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integer(psb_ipk_) :: i,j,k, ip1, ip2
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dot = czero
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ip1 = 1
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ip2 = 1
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do
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if (ip1 > nv1) exit
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if (ip2 > nv2) exit
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if (iv1(ip1) == iv2(ip2)) then
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dot = dot + conjg(v1(ip1))*v2(ip2)
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ip1 = ip1 + 1
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ip2 = ip2 + 1
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else if (iv1(ip1) < iv2(ip2)) then
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ip1 = ip1 + 1
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else
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ip2 = ip2 + 1
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end if
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end do
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end function psb_c_spdot_srtd
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subroutine psb_z_nspaxpby(nz,iz,z,alpha, nx, ix, x, beta, ny,iy,y,info)
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use psb_const_mod
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integer(psb_ipk_), intent(out) :: nz
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integer(psb_ipk_), intent(out) :: iz(:)
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complex(psb_dpk_), intent (out) :: z(:)
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integer(psb_ipk_), intent(in) :: nx, ny
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integer(psb_ipk_), intent(in) :: ix(:), iy(:)
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complex(psb_dpk_), intent (in) :: x(:), y(:)
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complex(psb_dpk_), intent (in) :: alpha, beta
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_) :: i,j,k, ipx, ipy, isz
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complex(psb_dpk_) :: acc
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info=psb_success_
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nz = 0
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ipx = 1
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ipy = 1
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isz = min(size(iz),size(z))
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if (beta == zzero) then
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if (alpha == zzero) return
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nz = nx
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if (nz > isz) then
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info = -1
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return
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endif
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iz(1:nz) = ix(1:nx)
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z(1:nz) = alpha*x(1:nx)
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else if (alpha == zzero) then
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nz = ny
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if (nz > isz) then
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info = -1
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return
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endif
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iz(1:nz) = iy(1:ny)
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z(1:nz) = beta*y(1:ny)
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else
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do
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if (ipx > nx) exit
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if (ipy > ny) exit
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if (ix(ipx) == iy(ipy)) then
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acc = beta*y(ipy) + alpha*x(ipx)
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nz = nz + 1
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if (nz > isz) then
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info = -1
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return
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endif
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iz(nz) = ix(ipx)
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z(nz) = acc
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ipx = ipx + 1
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ipy = ipy + 1
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else
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nz = nz + 1
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if (nz > isz) then
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info = -1
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return
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endif
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if (ix(ipx) < iy(ipy)) then
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iz(nz) = ix(ipx)
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z(nz) = alpha*x(ipx)
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ipx = ipx + 1
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else
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iz(nz) = iy(ipy)
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z(nz) = beta*y(ipy)
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ipy = ipy + 1
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end if
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end if
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end do
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do
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if (ipx > nx) exit
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nz = nz + 1
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if (nz > isz) then
|
|
info = -1
|
|
return
|
|
endif
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|
iz(nz) = ix(ipx)
|
|
z(nz) = alpha*x(ipx)
|
|
ipx = ipx + 1
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|
end do
|
|
do
|
|
if (ipy > ny) exit
|
|
nz = nz + 1
|
|
if (nz > isz) then
|
|
info = -1
|
|
return
|
|
endif
|
|
iz(nz) = iy(ipy)
|
|
z(nz) = beta*y(ipy)
|
|
ipy = ipy + 1
|
|
end do
|
|
end if
|
|
|
|
end subroutine psb_z_nspaxpby
|
|
|
|
function psb_z_spdot_srtd(nv1,iv1,v1,nv2,iv2,v2) result(dot)
|
|
use psb_const_mod
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|
integer(psb_ipk_), intent(in) :: nv1,nv2
|
|
integer(psb_ipk_), intent(in) :: iv1(*), iv2(*)
|
|
complex(psb_dpk_), intent(in) :: v1(*),v2(*)
|
|
complex(psb_dpk_) :: dot
|
|
|
|
integer(psb_ipk_) :: i,j,k, ip1, ip2
|
|
|
|
dot = zzero
|
|
ip1 = 1
|
|
ip2 = 1
|
|
|
|
do
|
|
if (ip1 > nv1) exit
|
|
if (ip2 > nv2) exit
|
|
if (iv1(ip1) == iv2(ip2)) then
|
|
dot = dot + conjg(v1(ip1))*v2(ip2)
|
|
ip1 = ip1 + 1
|
|
ip2 = ip2 + 1
|
|
else if (iv1(ip1) < iv2(ip2)) then
|
|
ip1 = ip1 + 1
|
|
else
|
|
ip2 = ip2 + 1
|
|
end if
|
|
end do
|
|
|
|
end function psb_z_spdot_srtd
|