src/arith.h - master - niceSOFT/tar

/* Long integers, for GNU tar.
   Copyright 1999-2026 Free Software Foundation, Inc.

   This file is part of GNU tar.

   GNU tar is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   GNU tar is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

/* Handle large integers for calculating big tape lengths and the
   like.  In practice, double precision does for now.  On the vast
   majority of machines, it counts up to 2**52 bytes without any loss
   of information, and counts up to 2**62 bytes if data are always
   blocked in 1 kB boundaries.  We'll need arbitrary precision
   arithmetic anyway once we get into the 2**64 range, so there's no
   point doing anything fancy before then.  */

#define TARLONG_FORMAT "%.0f"
typedef double tarlong;