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psblas3/base/tools/psb_dfree.f90

176 lines
4.9 KiB
Fortran

!!$
!!$ 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
!!$ 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.
!!$
!!$
! File: psb_dfree.f90
!
! Subroutine: psb_dfree
! 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_dfree(x, desc_a, info)
!...free dense matrix structure...
use psb_const_mod
use psb_descriptor_type
use psb_error_mod
use psb_penv_mod
implicit none
!....parameters...
real(kind(1.d0)),allocatable, intent(inout) :: x(:,:)
type(psb_desc_type), intent(in) :: desc_a
integer :: info
!...locals....
integer :: ictxt,np,me,err_act
character(len=20) :: name
if(psb_get_errstatus() /= 0) return
info=0
call psb_erractionsave(err_act)
name='psb_dfree'
if (.not.allocated(desc_a%matrix_data)) then
info=295
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 = 2010
call psb_errpush(info,name)
goto 9999
endif
if (.not.allocated(x)) then
info=295
call psb_errpush(info,name)
goto 9999
end if
!deallocate x
deallocate(x,stat=info)
if (info /= psb_no_err_) then
info=4000
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_dfree
! Subroutine: psb_dfreev
! 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_dfreev(x, desc_a, info)
!...free dense matrix structure...
use psb_const_mod
use psb_descriptor_type
use psb_error_mod
use psb_penv_mod
implicit none
!....parameters...
real(kind(1.d0)),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=0
call psb_erractionsave(err_act)
name='psb_dfreev'
if (.not.allocated(desc_a%matrix_data)) then
info=295
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 = 2010
call psb_errpush(info,name)
goto 9999
endif
if (.not.allocated(x)) then
info=295
call psb_errpush(info,name)
goto 9999
end if
!deallocate x
deallocate(x,stat=info)
if (info /= psb_no_err_) then
info=4000
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_dfreev