!!$ 
!!$              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
!!$ 
!!$  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
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!!$ 
!!$  
! File: psb_sfree.f90
!
! Subroutine: psb_sfree
!    frees a dense matrix structure
! 
! Arguments: 
!    x(:,:)   - real, allocatable           The dense matrix to be freed.
!    desc_a   - type(psb_desc_type).      The communication descriptor.
!    info     - integer.                    Return code
subroutine psb_sfree(x, desc_a, info)
  use psb_sparse_mod, psb_protect_name => psb_sfree
  implicit none

  !....parameters...
  real(psb_spk_),allocatable, intent(inout)  :: x(:,:)
  type(psb_desc_type), intent(in) :: desc_a
  integer,intent(out)             :: info

  !...locals....
  integer             :: ictxt,np,me,err_act
  character(len=20)   :: name


  if(psb_get_errstatus() /= 0) return 
  info=psb_success_
  call psb_erractionsave(err_act)
  name='psb_sfree'
  if (.not.allocated(desc_a%matrix_data)) then
     info=psb_err_forgot_spall_
     call psb_errpush(info,name)
     goto 9999
  end if

  ictxt = psb_cd_get_context(desc_a)

  call psb_info(ictxt, me, np)
  !     ....verify blacs grid correctness..
  if (np == -1) then
    info = psb_err_blacs_error_
    call psb_errpush(info,name)
    goto 9999
  endif

  if (.not.allocated(x)) then
     info=psb_err_forgot_spall_
     call psb_errpush(info,name)
     goto 9999
  end if

  !deallocate x
  deallocate(x,stat=info)
  if (info /= psb_no_err_) then
    info=psb_err_alloc_dealloc_
    call psb_errpush(info,name)
    goto 9999
  endif


  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_sfree



! Subroutine: psb_sfreev
!    frees a dense matrix structure
! 
! Arguments: 
!    x():)    - real, allocatable              The dense matrix to be freed.
!    desc_a   - type(psb_desc_type).         The communication descriptor.
!    info     - integer.                       Return code
subroutine psb_sfreev(x, desc_a, info)
  use psb_sparse_mod, psb_protect_name => psb_sfreev
  implicit none
  !....parameters...
  real(psb_spk_),allocatable, intent(inout)    :: x(:)
  type(psb_desc_type), intent(in) :: desc_a
  integer, intent(out)            :: info 
  !...locals....
  integer             :: ictxt,np,me,err_act
  character(len=20)   :: name


  if(psb_get_errstatus() /= 0) return 
  info=psb_success_
  call psb_erractionsave(err_act)
  name='psb_sfreev'

  if (.not.allocated(desc_a%matrix_data)) then
     info=psb_err_forgot_spall_
     call psb_errpush(info,name)
     return
  end if
  ictxt = psb_cd_get_context(desc_a)

  call psb_info(ictxt, me, np)
  if (np == -1) then
    info = psb_err_blacs_error_
    call psb_errpush(info,name)
    goto 9999
  endif

  if (.not.allocated(x)) then
     info=psb_err_forgot_spall_
     call psb_errpush(info,name)
     goto 9999
  end if

  !deallocate x
  deallocate(x,stat=info)
  if (info /= psb_no_err_) then
    info=psb_err_alloc_dealloc_
    call psb_errpush(info,name)
  endif

  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_sfreev