This commit was manufactured by cvs2svn to create branch 'binutils'.
[platform/upstream/binutils.git] / gas / bignum.h
1 /* bignum.h-arbitrary precision integers
2    Copyright (C) 1987 Free Software Foundation, Inc.
3
4 This file is part of GAS, the GNU Assembler.
5
6 GAS 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 1, or (at your option)
9 any later version.
10
11 GAS 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.
15
16 You should have received a copy of the GNU General Public License
17 along with GAS; see the file COPYING.  If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
19
20 /***********************************************************************\
21 *                                                                       *
22 *       Arbitrary-precision integer arithmetic.                         *
23 *       For speed, we work in groups of bits, even though this          *
24 *       complicates algorithms.                                         *
25 *       Each group of bits is called a 'littlenum'.                     *
26 *       A bunch of littlenums representing a (possibly large)           *
27 *       integer is called a 'bignum'.                                   *
28 *       Bignums are >= 0.                                               *
29 *                                                                       *
30 \***********************************************************************/
31
32 #define LITTLENUM_NUMBER_OF_BITS        (16)
33 #define LITTLENUM_RADIX                 (1 << LITTLENUM_NUMBER_OF_BITS)
34 #define LITTLENUM_MASK                  (0xFFFF)
35 #define LITTLENUM_SHIFT                 (1)
36 #define CHARS_PER_LITTLENUM             (1 << LITTLENUM_SHIFT)
37 #ifndef BITS_PER_CHAR
38 #define BITS_PER_CHAR                   (8)
39 #endif
40
41 typedef unsigned short LITTLENUM_TYPE;
42
43 /* JF truncated this to get around a problem with GCC */
44 #define LOG_TO_BASE_2_OF_10             (3.3219280948873623478703194294893901758651 )
45                                 /* WARNING: I haven't checked that the trailing digits are correct! */
46
47 /* end: bignum.h */