projects / thirdparty / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| fecd2382 | 1 | /* bignum.h-arbitrary precision integers |
| 3340f7e5 | 2 | Copyright (C) 1987, 1992 Free Software Foundation, Inc. |
| 6efd877d | 3 | |
| a39116f1 | 4 | This file is part of GAS, the GNU Assembler. |
| 6efd877d | 5 | |
| a39116f1 RP |
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 2, or (at your option) | |
| 9 | any later version. | |
| 6efd877d | 10 | |
| a39116f1 RP |
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. | |
| 6efd877d | 15 | |
| a39116f1 RP |
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. */ | |
| fecd2382 RP |
19 | |
| 20 | /***********************************************************************\ | |
| a39116f1 RP |
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 | \***********************************************************************/ | |
| fecd2382 RP |
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 */ | |
| 3340f7e5 | 44 | #define LOG_TO_BASE_2_OF_10 (3.3219280948873623478703194294893901758651) |
| a39116f1 | 45 | /* WARNING: I haven't checked that the trailing digits are correct! */ |
| fecd2382 | 46 | |
| 6efd877d KR |
47 | /* lengths are in sizeof(littlenum)s */ |
| 48 | #if __STDC__ == 1 | |
| 49 | ||
| 50 | int bignum_copy (LITTLENUM_TYPE * in, int in_length, | |
| 51 | LITTLENUM_TYPE * out, int out_length); | |
| 52 | ||
| 53 | #else | |
| 54 | ||
| 55 | int bignum_copy (); | |
| 56 | ||
| 57 | #endif /* __STDC__ */ | |
| 58 | ||
| 59 | ||
| a39116f1 | 60 | /* end of bignum.h */ |