gnu/usr.bin/as/bignum.h

/* bignum.h-arbitrary precision integers
   Copyright (C) 1987 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 1, 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, 675 Mass Ave, Cambridge, MA 02139, 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 int      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! */

/* end: bignum.h */