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598 lines
12 KiB
Fortran
598 lines
12 KiB
Fortran
!
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! Parallel Sparse BLAS version 3.5
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! (C) Copyright 2006-2018
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! Salvatore Filippone
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! Alfredo Buttari
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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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subroutine psi_saxpby(m,n,alpha, x, beta, y, info)
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use psb_const_mod
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use psb_error_mod
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implicit none
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integer(psb_ipk_), intent(in) :: m, n
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real(psb_spk_), intent (in) :: x(:,:)
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real(psb_spk_), intent (inout) :: 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_) :: err_act
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integer(psb_ipk_) :: lx, ly
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integer(psb_ipk_) :: ierr(5)
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character(len=20) :: name, ch_err
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name='psb_geaxpby'
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if(psb_get_errstatus() /= 0) return
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info=psb_success_
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call psb_erractionsave(err_act)
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if (m < 0) then
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info = psb_err_iarg_neg_
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ierr(1) = 1; ierr(2) = m
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call psb_errpush(info,name,i_err=ierr)
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goto 9999
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end if
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if (n < 0) then
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info = psb_err_iarg_neg_
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ierr(1) = 2; ierr(2) = n
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call psb_errpush(info,name,i_err=ierr)
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goto 9999
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end if
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lx = size(x,1)
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ly = size(y,1)
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if (lx < m) then
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info = psb_err_input_asize_small_i_
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ierr(1) = 4; ierr(2) = m
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call psb_errpush(info,name,i_err=ierr)
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goto 9999
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end if
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if (ly < m) then
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info = psb_err_input_asize_small_i_
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ierr(1) = 6; ierr(2) = m
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call psb_errpush(info,name,i_err=ierr)
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goto 9999
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end if
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if ((m>0).and.(n>0)) call saxpby(m,n,alpha,x,lx,beta,y,ly,info)
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(err_act)
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return
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end subroutine psi_saxpby
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subroutine psi_saxpbyv(m,alpha, x, beta, y, info)
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use psb_const_mod
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use psb_error_mod
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implicit none
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integer(psb_ipk_), intent(in) :: m
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real(psb_spk_), intent (in) :: x(:)
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real(psb_spk_), intent (inout) :: 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_) :: err_act
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integer(psb_ipk_) :: lx, ly
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integer(psb_ipk_) :: ierr(5)
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character(len=20) :: name, ch_err
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name='psb_geaxpby'
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if(psb_get_errstatus() /= 0) return
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info=psb_success_
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call psb_erractionsave(err_act)
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if (m < 0) then
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info = psb_err_iarg_neg_
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ierr(1) = 1; ierr(2) = m
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call psb_errpush(info,name,i_err=ierr)
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goto 9999
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end if
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lx = size(x,1)
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ly = size(y,1)
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if (lx < m) then
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info = psb_err_input_asize_small_i_
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ierr(1) = 3; ierr(2) = m
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call psb_errpush(info,name,i_err=ierr)
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goto 9999
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end if
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if (ly < m) then
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info = psb_err_input_asize_small_i_
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ierr(1) = 5; ierr(2) = m
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call psb_errpush(info,name,i_err=ierr)
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goto 9999
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end if
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if (m>0) call saxpby(m,ione,alpha,x,lx,beta,y,ly,info)
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(err_act)
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return
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end subroutine psi_saxpbyv
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subroutine psi_sgthmv(n,k,idx,alpha,x,beta,y)
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use psb_const_mod
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implicit none
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integer(psb_ipk_) :: n, k, idx(:)
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real(psb_spk_) :: x(:,:), y(:),alpha,beta
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! Locals
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integer(psb_ipk_) :: i, j, pt
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if (beta == szero) then
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if (alpha == szero) then
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pt=0
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do j=1,k
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do i=1,n
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pt=pt+1
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y(pt) = szero
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end do
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end do
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else if (alpha == sone) then
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pt=0
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do j=1,k
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do i=1,n
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pt=pt+1
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y(pt) = x(idx(i),j)
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end do
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end do
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else if (alpha == -sone) then
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pt=0
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do j=1,k
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do i=1,n
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pt=pt+1
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y(pt) = -x(idx(i),j)
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end do
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end do
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else
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pt=0
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do j=1,k
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do i=1,n
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pt=pt+1
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y(pt) = alpha*x(idx(i),j)
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end do
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end do
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end if
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else
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if (beta == sone) then
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! Do nothing
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else if (beta == -sone) then
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y(1:n*k) = -y(1:n*k)
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else
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y(1:n*k) = beta*y(1:n*k)
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end if
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if (alpha == szero) then
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! do nothing
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else if (alpha == sone) then
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pt=0
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do j=1,k
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do i=1,n
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pt=pt+1
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y(pt) = y(pt) + x(idx(i),j)
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end do
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end do
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else if (alpha == -sone) then
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pt=0
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do j=1,k
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do i=1,n
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pt=pt+1
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y(pt) = y(pt) - x(idx(i),j)
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end do
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end do
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else
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pt=0
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do j=1,k
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do i=1,n
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pt=pt+1
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y(pt) = y(pt) + alpha*x(idx(i),j)
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end do
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end do
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end if
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end if
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end subroutine psi_sgthmv
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subroutine psi_sgthv(n,idx,alpha,x,beta,y)
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use psb_const_mod
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implicit none
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integer(psb_ipk_) :: n, idx(:)
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real(psb_spk_) :: x(:), y(:),alpha,beta
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! Locals
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integer(psb_ipk_) :: i
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if (beta == szero) then
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if (alpha == szero) then
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do i=1,n
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y(i) = szero
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end do
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else if (alpha == sone) then
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do i=1,n
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y(i) = x(idx(i))
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end do
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else if (alpha == -sone) then
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do i=1,n
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y(i) = -x(idx(i))
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end do
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else
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do i=1,n
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y(i) = alpha*x(idx(i))
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end do
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end if
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else
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if (beta == sone) then
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! Do nothing
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else if (beta == -sone) then
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y(1:n) = -y(1:n)
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else
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y(1:n) = beta*y(1:n)
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end if
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if (alpha == szero) then
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! do nothing
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else if (alpha == sone) then
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do i=1,n
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y(i) = y(i) + x(idx(i))
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end do
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else if (alpha == -sone) then
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do i=1,n
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y(i) = y(i) - x(idx(i))
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end do
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else
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do i=1,n
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y(i) = y(i) + alpha*x(idx(i))
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end do
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end if
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end if
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end subroutine psi_sgthv
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subroutine psi_sgthzmm(n,k,idx,x,y)
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use psb_const_mod
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implicit none
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integer(psb_ipk_) :: n, k, idx(:)
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real(psb_spk_) :: x(:,:), y(:,:)
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! Locals
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integer(psb_ipk_) :: i
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do i=1,n
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y(i,1:k)=x(idx(i),1:k)
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end do
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end subroutine psi_sgthzmm
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subroutine psi_sgthzmv(n,k,idx,x,y)
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use psb_const_mod
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implicit none
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integer(psb_ipk_) :: n, k, idx(:)
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real(psb_spk_) :: x(:,:), y(:)
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! Locals
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integer(psb_ipk_) :: i, j, pt
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pt=0
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do j=1,k
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do i=1,n
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pt=pt+1
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y(pt)=x(idx(i),j)
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end do
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end do
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end subroutine psi_sgthzmv
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subroutine psi_sgthzv(n,idx,x,y)
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use psb_const_mod
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implicit none
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integer(psb_ipk_) :: n, idx(:)
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real(psb_spk_) :: x(:), y(:)
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! Locals
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integer(psb_ipk_) :: i
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do i=1,n
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y(i)=x(idx(i))
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end do
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end subroutine psi_sgthzv
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subroutine psi_ssctmm(n,k,idx,x,beta,y)
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use psb_const_mod
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implicit none
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integer(psb_ipk_) :: n, k, idx(:)
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real(psb_spk_) :: beta, x(:,:), y(:,:)
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! Locals
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integer(psb_ipk_) :: i, j
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if (beta == szero) then
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do i=1,n
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y(idx(i),1:k) = x(i,1:k)
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end do
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else if (beta == sone) then
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do i=1,n
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y(idx(i),1:k) = y(idx(i),1:k)+x(i,1:k)
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end do
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else
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do i=1,n
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y(idx(i),1:k) = beta*y(idx(i),1:k)+x(i,1:k)
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end do
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end if
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end subroutine psi_ssctmm
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subroutine psi_ssctmv(n,k,idx,x,beta,y)
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use psb_const_mod
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implicit none
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integer(psb_ipk_) :: n, k, idx(:)
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real(psb_spk_) :: beta, x(:), y(:,:)
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! Locals
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integer(psb_ipk_) :: i, j, pt
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if (beta == szero) then
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pt=0
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do j=1,k
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do i=1,n
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pt=pt+1
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y(idx(i),j) = x(pt)
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end do
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end do
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else if (beta == sone) then
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pt=0
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do j=1,k
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do i=1,n
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pt=pt+1
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y(idx(i),j) = y(idx(i),j)+x(pt)
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end do
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end do
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else
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pt=0
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do j=1,k
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do i=1,n
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pt=pt+1
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y(idx(i),j) = beta*y(idx(i),j)+x(pt)
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end do
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end do
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end if
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end subroutine psi_ssctmv
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subroutine psi_ssctv(n,idx,x,beta,y)
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use psb_const_mod
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implicit none
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integer(psb_ipk_) :: n, idx(:)
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real(psb_spk_) :: beta, x(:), y(:)
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! Locals
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integer(psb_ipk_) :: i
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if (beta == szero) then
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do i=1,n
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y(idx(i)) = x(i)
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end do
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else if (beta == sone) then
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do i=1,n
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y(idx(i)) = y(idx(i))+x(i)
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end do
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else
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do i=1,n
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y(idx(i)) = beta*y(idx(i))+x(i)
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end do
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end if
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end subroutine psi_ssctv
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subroutine saxpby(m, n, alpha, X, lldx, beta, Y, lldy, info)
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use psb_const_mod
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use psb_error_mod
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implicit none
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integer(psb_ipk_) :: n, m, lldx, lldy, info
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real(psb_spk_) X(lldx,*), Y(lldy,*)
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real(psb_spk_) alpha, beta
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integer(psb_ipk_) :: i, j
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integer(psb_ipk_) :: int_err(5)
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character name*20
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name='saxpby'
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!
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! Error handling
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!
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info = psb_success_
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if (m.lt.0) then
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info=psb_err_iarg_neg_
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int_err(1)=1
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int_err(2)=m
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call fcpsb_errpush(info,name,int_err)
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goto 9999
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else if (n.lt.0) then
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info=psb_err_iarg_neg_
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int_err(1)=1
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int_err(2)=n
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call fcpsb_errpush(info,name,int_err)
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goto 9999
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else if (lldx.lt.max(1,m)) then
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info=psb_err_iarg_not_gtia_ii_
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int_err(1)=5
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int_err(2)=1
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int_err(3)=lldx
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int_err(4)=m
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call fcpsb_errpush(info,name,int_err)
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goto 9999
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else if (lldy.lt.max(1,m)) then
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info=psb_err_iarg_not_gtia_ii_
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int_err(1)=8
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int_err(2)=1
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int_err(3)=lldy
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int_err(4)=m
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call fcpsb_errpush(info,name,int_err)
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goto 9999
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endif
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if (alpha.eq.szero) then
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if (beta.eq.szero) then
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do j=1, n
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do i=1,m
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y(i,j) = szero
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enddo
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enddo
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else if (beta.eq.sone) then
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!
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! Do nothing!
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!
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else if (beta.eq.-sone) then
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do j=1,n
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do i=1,m
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y(i,j) = - y(i,j)
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enddo
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enddo
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else
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do j=1,n
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do i=1,m
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y(i,j) = beta*y(i,j)
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enddo
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enddo
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endif
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else if (alpha.eq.sone) then
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if (beta.eq.szero) then
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do j=1,n
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do i=1,m
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y(i,j) = x(i,j)
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enddo
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enddo
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else if (beta.eq.sone) then
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do j=1,n
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do i=1,m
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y(i,j) = x(i,j) + y(i,j)
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enddo
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enddo
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else if (beta.eq.-sone) then
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do j=1,n
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do i=1,m
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y(i,j) = x(i,j) - y(i,j)
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enddo
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enddo
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else
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do j=1,n
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do i=1,m
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y(i,j) = x(i,j) + beta*y(i,j)
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enddo
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enddo
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endif
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else if (alpha.eq.-sone) then
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if (beta.eq.szero) then
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do j=1,n
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do i=1,m
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y(i,j) = -x(i,j)
|
|
enddo
|
|
enddo
|
|
else if (beta.eq.sone) then
|
|
do j=1,n
|
|
do i=1,m
|
|
y(i,j) = -x(i,j) + y(i,j)
|
|
enddo
|
|
enddo
|
|
|
|
else if (beta.eq.-sone) then
|
|
do j=1,n
|
|
do i=1,m
|
|
y(i,j) = -x(i,j) - y(i,j)
|
|
enddo
|
|
enddo
|
|
else
|
|
do j=1,n
|
|
do i=1,m
|
|
y(i,j) = -x(i,j) + beta*y(i,j)
|
|
enddo
|
|
enddo
|
|
endif
|
|
|
|
else
|
|
|
|
if (beta.eq.szero) then
|
|
do j=1,n
|
|
do i=1,m
|
|
y(i,j) = alpha*x(i,j)
|
|
enddo
|
|
enddo
|
|
else if (beta.eq.sone) then
|
|
do j=1,n
|
|
do i=1,m
|
|
y(i,j) = alpha*x(i,j) + y(i,j)
|
|
enddo
|
|
enddo
|
|
|
|
else if (beta.eq.-sone) then
|
|
do j=1,n
|
|
do i=1,m
|
|
y(i,j) = alpha*x(i,j) - y(i,j)
|
|
enddo
|
|
enddo
|
|
else
|
|
do j=1,n
|
|
do i=1,m
|
|
y(i,j) = alpha*x(i,j) + beta*y(i,j)
|
|
enddo
|
|
enddo
|
|
endif
|
|
|
|
endif
|
|
|
|
return
|
|
|
|
9999 continue
|
|
call fcpsb_serror()
|
|
return
|
|
|
|
end subroutine saxpby
|