! Copyright (C) GFD Dennou Club, 2004.  All rights reserved.

subroutine GTVarGetDouble3(var, value, err)
    use gtdata_types, only: gt_variable
    use gtdata_generic, only: get_slice, GTVarGetDouble, inquire
    use gt_map, only: map_set_rank
    use dc_error, only: storeerror, dc_noerr
    use dc_trace, only: beginsub, endsub, DbgMessage
    implicit none
    type(gt_variable), intent(inout) :: var
    real(8)          , pointer       :: value(:, :, :)
    logical, intent(out), optional   :: err
    integer                          :: stat, n(3)
continue
    call beginsub('gtvargetdouble3', 'var.mapid=%d', i=(/var%mapid/))
    call map_set_rank(var, 3, stat)
    if (stat /= dc_noerr) goto 999
    call get_slice(var, dimord=1, count=n(1), count_compact=.false.)
    call get_slice(var, dimord=2, count=n(2), count_compact=.false.)
    call get_slice(var, dimord=3, count=n(3), count_compact=.false.)
    ! value を allocate (重複 allocate しないようにチェック)
    if ( associated(value) ) then
       if (   .not. size(value,1) == n(1) .or. &
            & .not. size(value,2) == n(2) .or. &
            & .not. size(value,3) == n(3)         ) then
          call DbgMessage('@ nullify value(%d,%d,%d), &
               &         allocate value(%d,%d,%d)', &
               &         i=(/size(value,1), size(value,2), size(value,3), &
               &             n(1), n(2), n(3)/) )
          nullify(value)
          allocate(value(n(1), n(2), n(3)))
       else
          call DbgMessage('@ value(%d,%d,%d) is already allocated', &
               &        i=(/n(1), n(2), n(3)/))
       endif
    else
       call DbgMessage('@ allocate value(%d,%d,%d)', i=(/n(1),n(2),n(3)/))
       allocate(value(n(1), n(2), n(3)))
    endif

    call GTVarGetDouble(var, value, product(n), err)
    call DbgMessage('max=%f min=%f', d=(/maxval(value), minval(value)/))
999 continue
    call endsub('gtvargetdouble3', 'n=%d', i=(/n/))
    call storeerror(stat, 'gtvargetdouble3')
end subroutine