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https://github.com/sfilippone/psblas3.git
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Implement TRIL/TRIU for CSR.
This commit is contained in:
Salvatore Filippone
@@ -2233,6 +2233,319 @@ subroutine psb_d_csr_csgetblk(imin,imax,a,b,info,&
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end subroutine psb_d_csr_csgetblk
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!
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! CSR implementation of tril/triu
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!
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subroutine psb_d_csr_tril(a,l,info,&
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& diag,imin,imax,jmin,jmax,rscale,cscale,u)
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! Output is always in COO format
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use psb_error_mod
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use psb_const_mod
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use psb_d_csr_mat_mod, psb_protect_name => psb_d_csr_tril
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implicit none
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class(psb_d_csr_sparse_mat), intent(in) :: a
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class(psb_d_coo_sparse_mat), intent(out) :: l
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integer(psb_ipk_),intent(out) :: info
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integer(psb_ipk_), intent(in), optional :: diag,imin,imax,jmin,jmax
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logical, intent(in), optional :: rscale,cscale
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class(psb_d_coo_sparse_mat), optional, intent(out) :: u
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integer(psb_ipk_) :: err_act, nzin, nzout, i, j, k
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integer(psb_ipk_) :: imin_, imax_, jmin_, jmax_, mb,nb, diag_, nzlin, nzuin, nz
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integer(psb_ipk_), allocatable :: ia(:), ja(:)
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real(psb_dpk_), allocatable :: val(:)
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integer(psb_ipk_) :: ierr(5)
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character(len=20) :: name='tril'
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logical :: rscale_, cscale_
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logical, parameter :: debug=.false.
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call psb_erractionsave(err_act)
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info = psb_success_
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if (present(diag)) then
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diag_ = diag
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else
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diag_ = 0
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end if
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if (present(imin)) then
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imin_ = imin
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else
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imin_ = 1
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end if
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if (present(imax)) then
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imax_ = imax
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else
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imax_ = a%get_nrows()
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end if
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if (present(jmin)) then
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jmin_ = jmin
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else
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jmin_ = 1
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end if
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if (present(jmax)) then
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jmax_ = jmax
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else
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jmax_ = a%get_ncols()
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end if
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if (present(rscale)) then
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rscale_ = rscale
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else
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rscale_ = .true.
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end if
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if (present(cscale)) then
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cscale_ = cscale
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else
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cscale_ = .true.
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end if
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if (rscale_) then
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mb = imax_ - imin_ +1
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else
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mb = imax_
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endif
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if (cscale_) then
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nb = jmax_ - jmin_ +1
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else
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nb = jmax_
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endif
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nz = a%get_nzeros()
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call l%allocate(mb,nb,nz)
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if (present(u)) then
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nzlin = l%get_nzeros() ! At this point it should be 0
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call u%allocate(mb,nb,nz)
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nzuin = u%get_nzeros() ! At this point it should be 0
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associate(val =>a%val, ja => a%ja, irp=>a%irp)
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do i=imin_,imax_
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do k=irp(i),irp(i+1)-1
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j = ja(k)
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if ((jmin_<=j).and.(j<=jmax_)) then
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if ((ja(k)-i)<=diag_) then
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nzlin = nzlin + 1
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l%ia(nzlin) = i
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l%ja(nzlin) = ja(k)
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l%val(nzlin) = val(k)
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else
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nzuin = nzuin + 1
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u%ia(nzuin) = i
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u%ja(nzuin) = ja(k)
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u%val(nzuin) = val(k)
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end if
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end if
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end do
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end do
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end associate
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call l%set_nzeros(nzlin)
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call u%set_nzeros(nzuin)
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call u%fix(info)
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nzout = u%get_nzeros()
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if (rscale_) &
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& u%ia(1:nzout) = u%ia(1:nzout) - imin_ + 1
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if (cscale_) &
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& u%ja(1:nzout) = u%ja(1:nzout) - jmin_ + 1
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if ((diag_ >=-1).and.(imin_ == jmin_)) then
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call u%set_triangle(.true.)
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call u%set_lower(.false.)
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end if
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else
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nzin = l%get_nzeros() ! At this point it should be 0
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associate(val =>a%val, ja => a%ja, irp=>a%irp)
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do i=imin_,imax_
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do k=irp(i),irp(i+1)-1
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if ((jmin_<=j).and.(j<=jmax_)) then
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if ((ja(k)-i)<=diag_) then
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nzin = nzin + 1
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l%ia(nzin) = i
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l%ja(nzin) = ja(k)
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l%val(nzin) = val(k)
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end if
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end if
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end do
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end do
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end associate
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call l%set_nzeros(nzin)
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end if
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call l%fix(info)
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nzout = l%get_nzeros()
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if (rscale_) &
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& l%ia(1:nzout) = l%ia(1:nzout) - imin_ + 1
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if (cscale_) &
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& l%ja(1:nzout) = l%ja(1:nzout) - jmin_ + 1
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if ((diag_ <= 0).and.(imin_ == jmin_)) then
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call l%set_triangle(.true.)
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call l%set_lower(.true.)
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end if
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if (info /= psb_success_) goto 9999
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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 psb_d_csr_tril
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subroutine psb_d_csr_triu(a,u,info,&
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& diag,imin,imax,jmin,jmax,rscale,cscale,l)
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! Output is always in COO format
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use psb_error_mod
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use psb_const_mod
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use psb_d_csr_mat_mod, psb_protect_name => psb_d_csr_triu
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implicit none
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class(psb_d_csr_sparse_mat), intent(in) :: a
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class(psb_d_coo_sparse_mat), intent(out) :: u
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integer(psb_ipk_),intent(out) :: info
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integer(psb_ipk_), intent(in), optional :: diag,imin,imax,jmin,jmax
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logical, intent(in), optional :: rscale,cscale
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class(psb_d_coo_sparse_mat), optional, intent(out) :: l
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integer(psb_ipk_) :: err_act, nzin, nzout, i, j, k
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integer(psb_ipk_) :: imin_, imax_, jmin_, jmax_, mb,nb, diag_, nzlin, nzuin, nz
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integer(psb_ipk_), allocatable :: ia(:), ja(:)
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real(psb_dpk_), allocatable :: val(:)
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integer(psb_ipk_) :: ierr(5)
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character(len=20) :: name='triu'
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logical :: rscale_, cscale_
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logical, parameter :: debug=.false.
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call psb_erractionsave(err_act)
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info = psb_success_
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if (present(diag)) then
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diag_ = diag
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else
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diag_ = 0
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end if
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if (present(imin)) then
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imin_ = imin
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else
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imin_ = 1
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end if
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if (present(imax)) then
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imax_ = imax
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else
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imax_ = a%get_nrows()
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end if
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if (present(jmin)) then
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jmin_ = jmin
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else
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jmin_ = 1
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end if
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if (present(jmax)) then
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jmax_ = jmax
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else
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jmax_ = a%get_ncols()
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end if
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if (present(rscale)) then
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rscale_ = rscale
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else
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rscale_ = .true.
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end if
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if (present(cscale)) then
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cscale_ = cscale
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else
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cscale_ = .true.
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end if
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if (rscale_) then
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mb = imax_ - imin_ +1
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else
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mb = imax_
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endif
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if (cscale_) then
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nb = jmax_ - jmin_ +1
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else
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nb = jmax_
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endif
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nz = a%get_nzeros()
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call u%allocate(mb,nb,nz)
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if (present(l)) then
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nzuin = u%get_nzeros() ! At this point it should be 0
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call l%allocate(mb,nb,nz)
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nzlin = l%get_nzeros() ! At this point it should be 0
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associate(val =>a%val, ja => a%ja, irp=>a%irp)
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do i=imin_,imax_
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do k=irp(i),irp(i+1)-1
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j = ja(k)
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if ((jmin_<=j).and.(j<=jmax_)) then
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if ((ja(k)-i)<diag_) then
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nzlin = nzlin + 1
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l%ia(nzlin) = i
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l%ja(nzlin) = ja(k)
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l%val(nzlin) = val(k)
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else
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nzuin = nzuin + 1
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u%ia(nzuin) = i
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u%ja(nzuin) = ja(k)
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u%val(nzuin) = val(k)
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end if
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end if
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end do
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end do
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end associate
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call u%set_nzeros(nzuin)
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call l%set_nzeros(nzlin)
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call l%fix(info)
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nzout = l%get_nzeros()
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if (rscale_) &
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& l%ia(1:nzout) = l%ia(1:nzout) - imin_ + 1
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if (cscale_) &
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& l%ja(1:nzout) = l%ja(1:nzout) - jmin_ + 1
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if ((diag_ <=1).and.(imin_ == jmin_)) then
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call l%set_triangle(.true.)
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call l%set_lower(.true.)
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end if
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else
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nzin = u%get_nzeros() ! At this point it should be 0
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associate(val =>a%val, ja => a%ja, irp=>a%irp)
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do i=imin_,imax_
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do k=irp(i),irp(i+1)-1
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if ((jmin_<=j).and.(j<=jmax_)) then
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if ((ja(k)-i)>=diag_) then
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nzin = nzin + 1
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u%ia(nzin) = i
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u%ja(nzin) = ja(k)
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u%val(nzin) = val(k)
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end if
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end if
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end do
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end do
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end associate
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call u%set_nzeros(nzin)
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end if
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call u%fix(info)
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nzout = u%get_nzeros()
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if (rscale_) &
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& u%ia(1:nzout) = u%ia(1:nzout) - imin_ + 1
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if (cscale_) &
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& u%ja(1:nzout) = u%ja(1:nzout) - jmin_ + 1
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if ((diag_ >= 0).and.(imin_ == jmin_)) then
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call u%set_triangle(.true.)
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call u%set_upper(.true.)
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end if
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if (info /= psb_success_) goto 9999
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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 psb_d_csr_triu
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subroutine psb_d_csr_csput_a(nz,ia,ja,val,a,imin,imax,jmin,jmax,info,gtl)
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