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Dogcows Code - chaz/tar/blob - src/arith.h
1 /* Long integers, for GNU tar.
2 Copyright 1999, 2007, 2013-2014 Free Software Foundation, Inc.
4 This file is part of GNU tar.
6 GNU tar is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 GNU tar is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19 /* Handle large integers for calculating big tape lengths and the
20 like. In practice, double precision does for now. On the vast
21 majority of machines, it counts up to 2**52 bytes without any loss
22 of information, and counts up to 2**62 bytes if data are always
23 blocked in 1 kB boundaries. We'll need arbitrary precision
24 arithmetic anyway once we get into the 2**64 range, so there's no
25 point doing anything fancy before then. */
27 #define TARLONG_FORMAT "%.0f"
28 typedef double tarlong
;
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