You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
202 lines
4.9 KiB
Fortran
202 lines
4.9 KiB
Fortran
subroutine mld_c_diag_solver_apply(alpha,sv,x,beta,y,desc_data,trans,work,info)
|
|
|
|
use psb_base_mod
|
|
use mld_c_diag_solver, mld_protect_name => mld_c_diag_solver_apply
|
|
implicit none
|
|
type(psb_desc_type), intent(in) :: desc_data
|
|
class(mld_c_diag_solver_type), intent(in) :: sv
|
|
complex(psb_spk_), intent(inout) :: x(:)
|
|
complex(psb_spk_), intent(inout) :: y(:)
|
|
complex(psb_spk_),intent(in) :: alpha,beta
|
|
character(len=1),intent(in) :: trans
|
|
complex(psb_spk_),target, intent(inout) :: work(:)
|
|
integer, intent(out) :: info
|
|
|
|
integer :: n_row,n_col
|
|
complex(psb_spk_), pointer :: ww(:), aux(:), tx(:),ty(:)
|
|
integer :: ictxt,np,me,i, err_act
|
|
character :: trans_
|
|
character(len=20) :: name='c_diag_solver_apply'
|
|
|
|
call psb_erractionsave(err_act)
|
|
|
|
info = psb_success_
|
|
|
|
trans_ = psb_toupper(trans)
|
|
select case(trans_)
|
|
case('N')
|
|
case('T','C')
|
|
case default
|
|
call psb_errpush(psb_err_iarg_invalid_i_,name)
|
|
goto 9999
|
|
end select
|
|
|
|
n_row = desc_data%get_local_rows()
|
|
n_col = desc_data%get_local_cols()
|
|
|
|
if (trans_ == 'C') then
|
|
if (beta == czero) then
|
|
|
|
if (alpha == czero) then
|
|
y(1:n_row) = czero
|
|
else if (alpha == cone) then
|
|
do i=1, n_row
|
|
y(i) = conjg(sv%d(i)) * x(i)
|
|
end do
|
|
else if (alpha == -cone) then
|
|
do i=1, n_row
|
|
y(i) = -conjg(sv%d(i)) * x(i)
|
|
end do
|
|
else
|
|
do i=1, n_row
|
|
y(i) = alpha * conjg(sv%d(i)) * x(i)
|
|
end do
|
|
end if
|
|
|
|
else if (beta == cone) then
|
|
|
|
if (alpha == czero) then
|
|
!y(1:n_row) = czero
|
|
else if (alpha == cone) then
|
|
do i=1, n_row
|
|
y(i) = conjg(sv%d(i)) * x(i) + y(i)
|
|
end do
|
|
else if (alpha == -cone) then
|
|
do i=1, n_row
|
|
y(i) = -conjg(sv%d(i)) * x(i) + y(i)
|
|
end do
|
|
else
|
|
do i=1, n_row
|
|
y(i) = alpha * conjg(sv%d(i)) * x(i) + y(i)
|
|
end do
|
|
end if
|
|
|
|
else if (beta == -cone) then
|
|
|
|
if (alpha == czero) then
|
|
y(1:n_row) = -y(1:n_row)
|
|
else if (alpha == cone) then
|
|
do i=1, n_row
|
|
y(i) = conjg(sv%d(i)) * x(i) - y(i)
|
|
end do
|
|
else if (alpha == -cone) then
|
|
do i=1, n_row
|
|
y(i) = -conjg(sv%d(i)) * x(i) - y(i)
|
|
end do
|
|
else
|
|
do i=1, n_row
|
|
y(i) = alpha * conjg(sv%d(i)) * x(i) - y(i)
|
|
end do
|
|
end if
|
|
|
|
else
|
|
|
|
if (alpha == czero) then
|
|
y(1:n_row) = beta *y(1:n_row)
|
|
else if (alpha == cone) then
|
|
do i=1, n_row
|
|
y(i) = conjg(sv%d(i)) * x(i) + beta*y(i)
|
|
end do
|
|
else if (alpha == -cone) then
|
|
do i=1, n_row
|
|
y(i) = -conjg(sv%d(i)) * x(i) + beta*y(i)
|
|
end do
|
|
else
|
|
do i=1, n_row
|
|
y(i) = alpha * conjg(sv%d(i)) * x(i) + beta*y(i)
|
|
end do
|
|
end if
|
|
|
|
end if
|
|
|
|
else if (trans_ /= 'C') then
|
|
|
|
if (beta == czero) then
|
|
|
|
if (alpha == czero) then
|
|
y(1:n_row) = czero
|
|
else if (alpha == cone) then
|
|
do i=1, n_row
|
|
y(i) = sv%d(i) * x(i)
|
|
end do
|
|
else if (alpha == -cone) then
|
|
do i=1, n_row
|
|
y(i) = -sv%d(i) * x(i)
|
|
end do
|
|
else
|
|
do i=1, n_row
|
|
y(i) = alpha * sv%d(i) * x(i)
|
|
end do
|
|
end if
|
|
|
|
else if (beta == cone) then
|
|
|
|
if (alpha == czero) then
|
|
!y(1:n_row) = czero
|
|
else if (alpha == cone) then
|
|
do i=1, n_row
|
|
y(i) = sv%d(i) * x(i) + y(i)
|
|
end do
|
|
else if (alpha == -cone) then
|
|
do i=1, n_row
|
|
y(i) = -sv%d(i) * x(i) + y(i)
|
|
end do
|
|
else
|
|
do i=1, n_row
|
|
y(i) = alpha * sv%d(i) * x(i) + y(i)
|
|
end do
|
|
end if
|
|
|
|
else if (beta == -cone) then
|
|
|
|
if (alpha == czero) then
|
|
y(1:n_row) = -y(1:n_row)
|
|
else if (alpha == cone) then
|
|
do i=1, n_row
|
|
y(i) = sv%d(i) * x(i) - y(i)
|
|
end do
|
|
else if (alpha == -cone) then
|
|
do i=1, n_row
|
|
y(i) = -sv%d(i) * x(i) - y(i)
|
|
end do
|
|
else
|
|
do i=1, n_row
|
|
y(i) = alpha * sv%d(i) * x(i) - y(i)
|
|
end do
|
|
end if
|
|
|
|
else
|
|
|
|
if (alpha == czero) then
|
|
y(1:n_row) = beta *y(1:n_row)
|
|
else if (alpha == cone) then
|
|
do i=1, n_row
|
|
y(i) = sv%d(i) * x(i) + beta*y(i)
|
|
end do
|
|
else if (alpha == -cone) then
|
|
do i=1, n_row
|
|
y(i) = -sv%d(i) * x(i) + beta*y(i)
|
|
end do
|
|
else
|
|
do i=1, n_row
|
|
y(i) = alpha * sv%d(i) * x(i) + beta*y(i)
|
|
end do
|
|
end if
|
|
|
|
end if
|
|
|
|
end if
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 continue
|
|
call psb_erractionrestore(err_act)
|
|
if (err_act == psb_act_abort_) then
|
|
call psb_error()
|
|
return
|
|
end if
|
|
return
|
|
|
|
end subroutine mld_c_diag_solver_apply
|