forked from KolibriOS/kolibrios
43 lines
1.6 KiB
C
43 lines
1.6 KiB
C
/* bignum.h-arbitrary precision integers
|
|
Copyright 1987, 1992, 2003, 2005, 2007 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 3, 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, 51 Franklin Street - Fifth Floor,
|
|
Boston, MA 02110-1301, 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;
|