| /* bignum.h-arbitrary precision integers |
| Copyright 1987, 1992, 2003 Free Software Foundation, Inc. |
| |
| This file is part of GAS, the GNU Assembler. |
| |
| GAS 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 2, or (at your option) |
| any later version. |
| |
| GAS 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 GAS; see the file COPYING. If not, write to |
| the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| |
| /***********************************************************************\ |
| * * |
| * Arbitrary-precision integer arithmetic. * |
| * For speed, we work in groups of bits, even though this * |
| * complicates algorithms. * |
| * Each group of bits is called a 'littlenum'. * |
| * A bunch of littlenums representing a (possibly large) * |
| * integer is called a 'bignum'. * |
| * Bignums are >= 0. * |
| * * |
| \***********************************************************************/ |
| |
| #define LITTLENUM_NUMBER_OF_BITS (16) |
| #define LITTLENUM_RADIX (1 << LITTLENUM_NUMBER_OF_BITS) |
| #define LITTLENUM_MASK (0xFFFF) |
| #define LITTLENUM_SHIFT (1) |
| #define CHARS_PER_LITTLENUM (1 << LITTLENUM_SHIFT) |
| #ifndef BITS_PER_CHAR |
| #define BITS_PER_CHAR (8) |
| #endif |
| |
| typedef unsigned short LITTLENUM_TYPE; |
| |
| /* JF truncated this to get around a problem with GCC */ |
| #define LOG_TO_BASE_2_OF_10 (3.3219280948873623478703194294893901758651) |
| /* WARNING: I haven't checked that the trailing digits are correct! */ |
| |
| /* lengths are in sizeof(littlenum)s */ |
| |
| int bignum_copy (LITTLENUM_TYPE * in, int in_length, |
| LITTLENUM_TYPE * out, int out_length); |
| |
| /* end of bignum.h */ |