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536 lines
12 KiB
Fortran
536 lines
12 KiB
Fortran
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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if (acc /= szero) then
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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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end if
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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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if (acc /= dzero) then
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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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end if
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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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if (acc /= czero) then
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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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end if
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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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if (acc /= zzero) then
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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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end if
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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_z_nspaxpby
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function psb_z_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_dpk_), intent(in) :: v1(*),v2(*)
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complex(psb_dpk_) :: dot
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integer(psb_ipk_) :: i,j,k, ip1, ip2
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dot = zzero
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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_z_spdot_srtd
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