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397 lines
7.6 KiB
Fortran
397 lines
7.6 KiB
Fortran
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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