psblas3/base/tools/psb_cdins.f90

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!!$              Parallel Sparse BLAS  version 3.0
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!!$                       Salvatore Filippone    University of Rome Tor Vergata
!!$                       Alfredo Buttari        CNRS-IRIT, Toulouse
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! File: psb_cdins.f90
!
! Subroutine: psb_cdins
!   Takes as input a cloud of points and updates the descriptor accordingly.
!   Note: entries with a row index not belonging to the current process are 
!         ignored (see usage of ila_ as mask in the call to psb_idx_ins_cnv).
! 
! Arguments: 
!    nz       - integer.                       The number of points to insert.
!    ia(:)    - integer                        The row indices of the points.
!    ja(:)    - integer                        The column indices of the points.
!    desc_a   - type(psb_desc_type).         The communication descriptor to be freed.
!    info     - integer.                       Return code.
!    ila(:)   - integer, optional              The row indices in local numbering
!    jla(:)   - integer, optional              The col indices in local numbering
!
subroutine psb_cdinsrc(nz,ia,ja,desc_a,info,ila,jla)
  use psb_sparse_mod, psb_protect_name => psb_cdinsrc
  use psi_mod
  implicit none

  !....PARAMETERS...
  Type(psb_desc_type), intent(inout) :: desc_a
  Integer, intent(in)                :: nz,ia(:),ja(:)
  integer, intent(out)               :: info
  integer, optional, intent(out)     :: ila(:), jla(:)

  !LOCALS.....

  integer :: ictxt,dectype,mglob, nglob
  integer                :: np, me
  integer                :: nrow,ncol, err_act
  logical, parameter     :: debug=.false.
  integer, parameter     :: relocsz=200
  integer, allocatable   :: ila_(:), jla_(:)
  character(len=20)      :: name

  info = psb_success_
  name = 'psb_cdins'
  call psb_erractionsave(err_act)

  ictxt   = psb_cd_get_context(desc_a)
  dectype = psb_cd_get_dectype(desc_a)
  mglob   = psb_cd_get_global_rows(desc_a)
  nglob   = psb_cd_get_global_cols(desc_a)
  nrow    = psb_cd_get_local_rows(desc_a)
  ncol    = psb_cd_get_local_cols(desc_a)

  call psb_info(ictxt, me, np)

  if (.not.psb_is_bld_desc(desc_a)) then 
    info = psb_err_input_matrix_unassembled_
    call psb_errpush(info,name)
    goto 9999
  endif

  if (nz < 0) then 
    info = 1111
    call psb_errpush(info,name)
    goto 9999
  end if
  if (nz == 0) return 

  if (size(ia) < nz) then 
    info = 1111
    call psb_errpush(info,name)
    goto 9999
  end if

  if (size(ja) < nz) then 
    info = 1111
    call psb_errpush(info,name)
    goto 9999
  end if
  if (present(ila)) then 
    if (size(ila) < nz) then 
      info = 1111
      call psb_errpush(info,name)
      goto 9999
    end if
  end if
  if (present(jla)) then 
    if (size(jla) < nz) then 
      info = 1111
      call psb_errpush(info,name)
      goto 9999
    end if
  end if

  if (present(ila).and.present(jla)) then 
    call psi_idx_cnv(nz,ia,ila,desc_a,info,owned=.true.)
    if (info == psb_success_) &
         & call psb_cdins(nz,ja,desc_a,info,jla=jla,mask=(ila(1:nz)>0))
  else
    if (present(ila).or.present(jla)) then 
      write(psb_err_unit,*) 'Inconsistent call : ',present(ila),present(jla)
    endif
    allocate(ila_(nz),stat=info)
    if (info /= psb_success_) then 
      info = psb_err_alloc_dealloc_
      call psb_errpush(info,name)
      goto 9999
    end if
    call psi_idx_cnv(nz,ia,ila_,desc_a,info,owned=.true.)
    if (info == psb_success_) &
         & call psb_cdins(nz,ja,desc_a,info,mask=(ila_(1:nz)>0))
    deallocate(ila_)
  end if

  call psb_erractionrestore(err_act)
  return

9999 continue
  call psb_erractionrestore(err_act)

  if (err_act == psb_act_ret_) then
    return
  else
    call psb_error(ictxt)
  end if
  return

end subroutine psb_cdinsrc

!
! Subroutine: psb_cdinsc
!   Takes as input a list of indices points and updates the descriptor accordingly.
!   The optional argument mask may be used to control which indices are actually
!   used. 
! 
! Arguments: 
!    nz       - integer.                       The number of points to insert.
!    ja(:)    - integer                        The column indices of the points.
!    desc     - type(psb_desc_type).         The communication descriptor 
!    info     - integer.                       Return code.
!    jla(:)   - integer, optional              The col indices in local numbering
!    mask(:)  - logical, optional, target
!
subroutine psb_cdinsc(nz,ja,desc,info,jla,mask)
  use psb_sparse_mod, psb_protect_name => psb_cdinsc
  use psi_mod
  implicit none

  !....PARAMETERS...
  Type(psb_desc_type), intent(inout) :: desc
  Integer, intent(in)                :: nz,ja(:)
  integer, intent(out)               :: info
  integer, optional, intent(out)     :: jla(:)
  logical, optional, target, intent(in) :: mask(:) 

  !LOCALS.....

  integer :: ictxt,dectype,mglob, nglob
  integer                :: np, me
  integer                :: nrow,ncol, err_act
  logical, parameter     :: debug=.false.
  integer, parameter     :: relocsz=200
  integer, allocatable   :: ila_(:), jla_(:)
  logical, allocatable, target  :: mask__(:) 
  logical, pointer       :: mask_(:) 
  character(len=20)      :: name

  info = psb_success_
  name = 'psb_cdins'
  call psb_erractionsave(err_act)

  ictxt   = psb_cd_get_context(desc)
  dectype = psb_cd_get_dectype(desc)
  mglob   = psb_cd_get_global_rows(desc)
  nglob   = psb_cd_get_global_cols(desc)
  nrow    = psb_cd_get_local_rows(desc)
  ncol    = psb_cd_get_local_cols(desc)

  call psb_info(ictxt, me, np)

  if (.not.psb_is_bld_desc(desc)) then 
    info = psb_err_input_matrix_unassembled_
    call psb_errpush(info,name)
    goto 9999
  endif

  if (nz < 0) then 
    info = 1111
    call psb_errpush(info,name)
    goto 9999
  end if
  if (nz == 0) return 

  if (size(ja) < nz) then 
    info = 1111
    call psb_errpush(info,name)
    goto 9999
  end if

  if (present(jla)) then 
    if (size(jla) < nz) then 
      info = 1111
      call psb_errpush(info,name)
      goto 9999
    end if
  end if
  if (present(mask)) then 
    if (size(mask) < nz) then 
      info = 1111
      call psb_errpush(info,name)
      goto 9999
    end if
    mask_ => mask
  else
    allocate(mask__(nz))
    mask_ => mask__
    mask_ = .true.
  end if

  if (present(jla)) then 
    call psi_idx_ins_cnv(nz,ja,jla,desc,info,mask=mask_)
  else
    allocate(jla_(nz),stat=info)
    if (info /= psb_success_) then 
      info = psb_err_alloc_dealloc_
      call psb_errpush(info,name)
      goto 9999
    end if
    call psi_idx_ins_cnv(nz,ja,jla_,desc,info,mask=mask_)
    deallocate(jla_)
  end if

  call psb_erractionrestore(err_act)
  return

9999 continue
  call psb_erractionrestore(err_act)

  if (err_act == psb_act_ret_) then
    return
  else
    call psb_error(ictxt)
  end if
  return

end subroutine psb_cdinsc