Dogcows Code - chaz/tar/blob - src/arith.h

   1 /* Long integers, for GNU tar.
   2    Copyright 1999, 2007 Free Software Foundation, Inc.
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 3, or (at your option)
   7    any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, write to the Free Software Foundation,
  16    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  17
  18 /* Handle large integers for calculating big tape lengths and the
  19    like.  In practice, double precision does for now.  On the vast
  20    majority of machines, it counts up to 2**52 bytes without any loss
  21    of information, and counts up to 2**62 bytes if data are always
  22    blocked in 1 kB boundaries.  We'll need arbitrary precision
  23    arithmetic anyway once we get into the 2**64 range, so there's no
  24    point doing anything fancy before then.  */
  25
  26 #define TARLONG_FORMAT "%.0f"
  27 typedef double tarlong;