psblas3/base/tools/psb_csprn.f90

!!$ 
!!$              Parallel Sparse BLAS  version 2.2
!!$    (C) Copyright 2006/2007/2008
!!$                       Salvatore Filippone    University of Rome Tor Vergata
!!$                       Alfredo Buttari        University of Rome Tor Vergata
!!$ 
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! File: psb_csprn.f90
!
! Subroutine: psb_csprn
!    Reinit sparse matrix structure for psblas routines: on output the matrix 
!    is in the update state.
! 
! Arguments: 
!    a        - type(psb_cspmat_type).        The sparse matrix to be reinitiated.      
!    desc_a   - type(psb_desc_type).          The communication descriptor.
!    info     - integer.                        Return code.
!    clear    - logical, optional               Whether the coefficients should be zeroed
!                                               default .true.          
!
Subroutine psb_csprn(a, desc_a,info,clear)

  use psb_descriptor_type
  use psb_spmat_type
  use psb_serial_mod
  use psb_const_mod
  use psb_error_mod
  use psb_penv_mod
  Implicit None

  !....Parameters...
  Type(psb_desc_type), intent(in)      :: desc_a
  Type(psb_cspmat_type), intent(inout) :: a
  integer, intent(out)                 :: info
  logical, intent(in), optional        :: clear

  !locals
  Integer             :: ictxt,np,me,err,err_act
  integer             :: debug_level, debug_unit
  integer             :: int_err(5)
  character(len=20)   :: name
  logical             :: clear_

  info = 0
  err  = 0
  int_err(1)=0
  name = 'psb_csprn'
  call psb_erractionsave(err_act)
  debug_unit  = psb_get_debug_unit()
  debug_level = psb_get_debug_level()

  ictxt = psb_cd_get_context(desc_a)
  call psb_info(ictxt, me, np)
  if (debug_level >= psb_debug_outer_) &
       & write(debug_unit,*) me,' ',trim(name),': start '

  if (psb_is_bld_desc(desc_a)) then
    ! Should do nothing, we are called redundantly
    return
  endif
  if (.not.psb_is_asb_desc(desc_a)) then
    info=590     
    call psb_errpush(info,name)
    goto 9999
  endif
  if (present(clear)) then 
    clear_ = clear
  else
    clear_ = .true.
  end if

  call psb_sp_reinit(a,info,clear=clear_)

  if (info /= 0) goto 9999
  if (debug_level >= psb_debug_outer_) &
       & write(debug_unit,*) me,' ',trim(name),': done'

  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_csprn