!!$ 
!!$              Parallel Sparse BLAS  v2.0
!!$    (C) Copyright 2006 Salvatore Filippone    University of Rome Tor Vergata
!!$                       Alfredo Buttari        University of Rome Tor Vergata
!!$ 
!!$  Redistribution and use in source and binary forms, with or without
!!$  modification, are permitted provided that the following conditions
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!!$       notice, this list of conditions and the following disclaimer.
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!!$  
! File: psb_cdtransfer.f90
!
! Subroutine: psb_cdtransfer
!   Transfers data and allocation from in to out (just like MOVE_ALLOC). 
! 
! Parameters: 
!    desc_in  - type(<psb_desc_type>).         The communication descriptor to be transferred.
!    desc_out - type(<psb_desc_type>).         The output communication descriptor.
!    info     - integer.                       Eventually returns an error code.
subroutine psb_cdtransfer(desc_in, desc_out, info)

  use psb_descriptor_type
  use psb_serial_mod
  use psb_realloc_mod
  use psb_const_mod
  use psb_error_mod

  implicit none
  !....parameters...

  type(psb_desc_type), intent(inout)  :: desc_in
  type(psb_desc_type), intent(out)    :: desc_out
  integer, intent(out)                :: info

  !locals
  integer             :: nprow,npcol,me,mypcol,&
       & ictxt, isz, dectype, err_act, err
  integer             :: int_err(5),temp(1)
  real(kind(1.d0))    :: real_err(5)
  logical, parameter  :: debug=.false.,debugprt=.false.
  character(len=20)   :: name, char_err
  if (debug) write(0,*) me,'Entered CDTRANSFER'
  if (psb_get_errstatus().ne.0) return 
  info = 0
  call psb_erractionsave(err_act)
  name = 'psb_cdtransfer'
  
  ictxt=desc_in%matrix_data(psb_ctxt_)
  ! check on blacs grid 
  call blacs_gridinfo(ictxt, nprow, npcol, me, mypcol)
  if (debug) write(0,*) me,'Entered CDTRANSFER'
  if (nprow.eq.-1) then
     info = 2010
     call psb_errpush(info,name)
     goto 9999
  else if (npcol.ne.1) then
     info = 2030
     int_err(1) = npcol
     call psb_errpush(info,name,int_err)
     goto 9999
  endif

  call psb_nullify_desc(desc_out)
  
  desc_out%matrix_data  => desc_in%matrix_data
  desc_out%halo_index   => desc_in%halo_index
  desc_out%bnd_elem     => desc_in%bnd_elem    
  desc_out%ovrlap_elem  => desc_in%ovrlap_elem
  desc_out%ovrlap_index => desc_in%ovrlap_index
  desc_out%loc_to_glob  => desc_in%loc_to_glob
  desc_out%glob_to_loc  => desc_in%glob_to_loc
  desc_out%lprm         => desc_in%lprm
  desc_out%idx_space    => desc_in%idx_space

  call psb_nullify_desc(desc_in)

  call psb_erractionrestore(err_act)
  return
  
9999 continue
  call psb_erractionrestore(err_act)
  
  if (err_act.eq.act_ret) then
     return
  else
     call psb_error(ictxt)
  end if
  return

end subroutine psb_cdtransfer