!!$ 
!!$              Parallel Sparse BLAS  version 3.0
!!$    (C) Copyright 2006, 2007, 2008, 2009, 2010
!!$                       Salvatore Filippone    University of Rome Tor Vergata
!!$                       Alfredo Buttari        CNRS-IRIT, Toulouse
!!$ 
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!!$  
! File: psb_dspins.f90
!
! Subroutine: psb_dspins
!    Takes a cloud of coefficients and inserts them into a sparse matrix.
!    Note: coefficients with a row index not belonging to the current process are
!    ignored. 
!    If desc_a is in the build state this routine implies a call to psb_cdins. 
! 
! Arguments: 
!    nz       - integer.                    The number of points to insert.
!    ia(:)    - integer                     The row indices of the coefficients.
!    ja(:)    - integer                     The column indices of the coefficients.
!    val(:)   - real                        The values of the coefficients to be inserted.
!    a        - type(psb_dspmat_type).      The sparse destination matrix.      
!    desc_a   - type(psb_desc_type).        The communication descriptor.
!    info     - integer.                    Error code
!    rebuild  - logical                     Allows to reopen a matrix under
!                                           certain circumstances.
!
subroutine psb_dspins(nz,ia,ja,val,a,desc_a,info,rebuild)
  use psb_base_mod, psb_protect_name => psb_dspins
  implicit none

  !....parameters...
  type(psb_desc_type), intent(inout)   :: desc_a
  type(psb_dspmat_type), intent(inout) :: a
  integer(psb_ipk_), intent(in)                  :: nz,ia(:),ja(:)
  real(psb_dpk_), intent(in)         :: val(:)
  integer(psb_ipk_), intent(out)                 :: info
  logical, intent(in), optional        :: rebuild
  !locals.....

  integer(psb_ipk_) :: nrow, err_act, ncol, spstate
  integer(psb_ipk_) :: ictxt,np,me
  logical, parameter     :: debug=.false.
  integer(psb_ipk_), parameter     :: relocsz=200
  logical                :: rebuild_
  integer(psb_ipk_), allocatable   :: ila(:),jla(:)
  character(len=20)  :: name, ch_err

  info = psb_success_
  if (psb_errstatus_fatal()) return 
  name = 'psb_dspins'
  call psb_erractionsave(err_act)

  if (.not.desc_a%is_ok()) then
    info = psb_err_invalid_cd_state_
    call psb_errpush(info,name)
    goto 9999
  end if

  ictxt = desc_a%get_context()
  call psb_info(ictxt, me, np)

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

  if (present(rebuild)) then 
    rebuild_ = rebuild
  else
    rebuild_ = .false.
  endif

  if (psb_is_bld_desc(desc_a)) then 

      allocate(ila(nz),jla(nz),stat=info)
      if (info /= psb_success_) then
        ch_err='allocate'
        call psb_errpush(psb_err_from_subroutine_ai_,name,&
             & a_err=ch_err,i_err=(/info,0,0,0,0/))
        goto 9999
      end if
      call  psb_cdins(nz,ia,ja,desc_a,info,ila=ila,jla=jla)

      if (info /= psb_success_) then
        ch_err='psb_cdins'
        call psb_errpush(psb_err_from_subroutine_ai_,name,&
             & a_err=ch_err,i_err=(/info,0,0,0,0/))
        goto 9999
      end if
      nrow = desc_a%get_local_rows()
      ncol = desc_a%get_local_cols()

!!$      write(0,*) me,' Into csput valid row entries',count(ila(1:nz)>0),count(jla(1:nz)>0)
      if (a%is_bld()) then 
        call a%csput(nz,ila,jla,val,1,nrow,1,ncol,info)
        if (info /= psb_success_) then
          info=psb_err_from_subroutine_
          ch_err='psb_coins'
          call psb_errpush(info,name,a_err=ch_err)
          goto 9999
        end if
      else
        info = psb_err_invalid_a_and_cd_state_
        call psb_errpush(info,name)
        goto 9999
      end if

    
  else if (psb_is_asb_desc(desc_a)) then 

      allocate(ila(nz),jla(nz),stat=info)
      if (info /= psb_success_) then
        ch_err='allocate'
        call psb_errpush(psb_err_from_subroutine_ai_,name,&
             & a_err=ch_err,i_err=(/info,0,0,0,0/))
        goto 9999
      end if

      ila(1:nz) = ia(1:nz)
      jla(1:nz) = ja(1:nz)
      call psb_glob_to_loc(ila(1:nz),desc_a,info,iact='I')
      call psb_glob_to_loc(jla(1:nz),desc_a,info,iact='I')
      nrow = desc_a%get_local_rows()
      ncol = desc_a%get_local_cols()

      call a%csput(nz,ila,jla,val,1,nrow,1,ncol,info)
      if (info /= psb_success_) then
        info=psb_err_from_subroutine_
        ch_err='psb_coins'
        call psb_errpush(info,name,a_err=ch_err)
        goto 9999
      end if

  else
    info = psb_err_invalid_cd_state_
    call psb_errpush(info,name)
    goto 9999
  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(ictxt)
    return
  end if
  return

end subroutine psb_dspins


subroutine psb_dspins_2desc(nz,ia,ja,val,a,desc_ar,desc_ac,info)
  use psb_base_mod, psb_protect_name => psb_dspins_2desc
  implicit none

  !....parameters...
  type(psb_desc_type), intent(in)      :: desc_ar
  type(psb_desc_type), intent(inout)   :: desc_ac
  type(psb_dspmat_type), intent(inout) :: a
  integer(psb_ipk_), intent(in)                  :: nz,ia(:),ja(:)
  real(kind=psb_dpk_), intent(in)      :: val(:)
  integer(psb_ipk_), intent(out)                 :: info
  !locals.....

  integer(psb_ipk_) :: nrow, err_act, ncol, spstate
  integer(psb_ipk_) :: ictxt,np,me
  logical, parameter     :: debug=.false.
  integer(psb_ipk_), parameter     :: relocsz=200
  integer(psb_ipk_), allocatable   :: ila(:),jla(:)
  character(len=20)  :: name, ch_err

  info = psb_success_
  if (psb_errstatus_fatal()) return 
  name = 'psb_dspins'
  call psb_erractionsave(err_act)
  if (.not.desc_ar%is_ok()) then
    info = psb_err_invalid_cd_state_
    call psb_errpush(info,name)
    goto 9999
  end if
  if (.not.desc_ac%is_ok()) then
    info = psb_err_invalid_cd_state_
    call psb_errpush(info,name)
    goto 9999
  end if

  ictxt = desc_ar%get_context()
  call psb_info(ictxt, me, np)

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

  if (desc_ac%is_bld()) then 

    allocate(ila(nz),jla(nz),stat=info)
    if (info /= psb_success_) then
      ch_err='allocate'
      call psb_errpush(psb_err_from_subroutine_ai_,name,&
           & a_err=ch_err,i_err=(/info,0,0,0,0/))
      goto 9999
    end if
        ila(1:nz) = ia(1:nz)

    call psb_glob_to_loc(ia(1:nz),ila(1:nz),desc_ar,info,iact='I',owned=.true.)

    call psb_cdins(nz,ja,desc_ac,info,jla=jla, mask=(ila(1:nz)>0))

    if (psb_errstatus_fatal()) then
      ch_err='psb_cdins'
      call psb_errpush(psb_err_from_subroutine_ai_,name,&
           & a_err=ch_err,i_err=(/info,0,0,0,0/))
      goto 9999
    end if

    nrow = desc_ar%get_local_rows()
    ncol = desc_ac%get_local_cols()

    call a%csput(nz,ila,jla,val,1,nrow,1,ncol,info)
    if (psb_errstatus_fatal()) then 
      info=psb_err_from_subroutine_
      ch_err='psb_coins'
      call psb_errpush(info,name,a_err=ch_err)
      goto 9999
    end if

  else if (desc_ac%is_asb()) then 

    write(psb_err_unit,*) 'Why are you calling me on an assembled desc_ac?'
    info = psb_err_invalid_cd_state_
    call psb_errpush(info,name)
    goto 9999

  else
    info = psb_err_invalid_cd_state_
    call psb_errpush(info,name)
    goto 9999
  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(ictxt)
    return
  end if
  return

end subroutine psb_dspins_2desc