[thirdparty/binutils-gdb.git] / gas / bignum.h

/* bignum.h-arbitrary precision integers
   Copyright (C) 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, 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 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 of bignum.h */
Commit	Line	Data
fecd2382	1	/* bignum.h-arbitrary precision integers
3340f7e5	2	Copyright (C) 1987, 1992 Free Software Foundation, Inc.
a39116f1 RP	3
	4	This file is part of GAS, the GNU Assembler.
	5
	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.
	10
	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.
	15
	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
fecd2382 RP	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
a39116f1	47	/* end of bignum.h */