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Diffstat (limited to 'src/arith.h')
-rw-r--r-- | src/arith.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/arith.h b/src/arith.h new file mode 100644 index 0000000..ed930ac --- /dev/null +++ b/src/arith.h @@ -0,0 +1,28 @@ +/* Long integers, for GNU tar. + Copyright 1999, 2007, 2013-2014, 2016 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; |