/* bignum.h-arbitrary precision integers Copyright 1987, 1992 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 */