!                Parallel Sparse BLAS   GPU plugin 
!      (C) Copyright 2013
!  
!                         Salvatore Filippone
!                         Alessandro Fanfarillo
!   
!    Redistribution and use in source and binary forms, with or without
!    modification, are permitted provided that the following conditions
!    are met:
!      1. Redistributions of source code must retain the above copyright
!         notice, this list of conditions and the following disclaimer.
!      2. Redistributions in binary form must reproduce the above copyright
!         notice, this list of conditions, and the following disclaimer in the
!         documentation and/or other materials provided with the distribution.
!      3. The name of the PSBLAS group or the names of its contributors may
!         not be used to endorse or promote products derived from this
!         software without specific written permission.
!   
!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
!    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
!    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
!    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
!    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
!    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
!    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
!    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
!    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
!    POSSIBILITY OF SUCH DAMAGE.
!   
  

subroutine psb_d_mv_rsb_from_coo(a,b,info) 
  
  use psb_base_mod
  use psb_d_rsb_mat_mod, psb_protect_name => psb_d_mv_rsb_from_coo
  implicit none 

  class(psb_d_rsb_sparse_mat), intent(inout) :: a
  class(psb_d_coo_sparse_mat), intent(inout) :: b
  integer(psb_ipk_), intent(out)             :: info

  !locals
  Integer(Psb_ipk_) :: nza, nr, i,j,k, idl,err_act, nc, nzm, ir, ic

  info = psb_success_

  call b%fix(info)
  if (info /= psb_success_) return

  nr  = b%get_nrows()
  nc  = b%get_ncols()
  nza = b%get_nzeros()
  ! if (b%is_sorted()) then 
  !   ! If it is sorted then we can lessen memory impact 
  !   a%psb_d_base_sparse_mat = b%psb_d_base_sparse_mat

  !   ! First compute the number of nonzeros in each row.
  !   call psb_realloc(nr,a%irn,info) 
  !   if (info /= 0) goto 9999
  !   a%irn = 0
  !   do i=1, nza
  !     a%irn(b%ia(i)) = a%irn(b%ia(i)) + 1
  !   end do
  !   nzm = 0 
  !   do i=1, nr
  !     nzm = max(nzm,a%irn(i))
  !     a%irn(i) = 0
  !   end do
  !   ! Second: copy the column indices.
  !   call psb_realloc(nr,a%idiag,info) 
  !   if (info == 0) call psb_realloc(nr,nzm,a%ja,info) 
  !   if (info /= 0) goto 9999
  !   do i=1, nza
  !     ir = b%ia(i)
  !     ic = b%ja(i)
  !     j  = a%irn(ir) + 1 
  !     a%ja(ir,j) = ic
  !     a%irn(ir)  = j
  !   end do
  !   ! Third copy the other stuff
  !   deallocate(b%ia,b%ja,stat=info) 
  !   if (info == 0) call psb_realloc(nr,a%idiag,info)
  !   if (info == 0) call psb_realloc(nr,nzm,a%val,info)
  !   if (info /= 0) goto 9999
  !   k = 0 
  !   do i=1, nr
  !     a%idiag(i) = 0 
  !     do j=1, a%irn(i)
  !       k = k + 1 
  !       a%val(i,j) = b%val(k)
  !       if (i==a%ja(i,j)) a%idiag(i)=j
  !     end do
  !     do j=a%irn(i)+1, nzm
  !       a%ja(i,j) = i
  !       a%val(i,j) = dzero
  !     end do
  !   end do

  ! else 
    ! If b is not sorted, the only way is to copy. 
    call a%cp_from_coo(b,info)
    if (info /= 0) goto 9999
  ! end if

  call b%free()

  return

9999 continue
  info = psb_err_alloc_dealloc_
  return

end subroutine psb_d_mv_rsb_from_coo