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43 lines
1.6 KiB
C
43 lines
1.6 KiB
C
/* bignum.h-arbitrary precision integers
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Copyright (C) 1987-2016 Free Software Foundation, Inc.
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This file is part of GAS, the GNU Assembler.
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GAS is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to
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the Free Software Foundation, 51 Franklin Street - Fifth Floor,
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Boston, MA 02110-1301, USA. */
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/***********************************************************************\
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* *
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* Arbitrary-precision integer arithmetic. *
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* For speed, we work in groups of bits, even though this *
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* complicates algorithms. *
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* Each group of bits is called a 'littlenum'. *
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* A bunch of littlenums representing a (possibly large) *
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* integer is called a 'bignum'. *
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* Bignums are >= 0. *
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* *
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\***********************************************************************/
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#define LITTLENUM_NUMBER_OF_BITS (16)
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#define LITTLENUM_RADIX (1 << LITTLENUM_NUMBER_OF_BITS)
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#define LITTLENUM_MASK (0xFFFF)
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#define LITTLENUM_SHIFT (1)
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#define CHARS_PER_LITTLENUM (1 << LITTLENUM_SHIFT)
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#ifndef BITS_PER_CHAR
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#define BITS_PER_CHAR (8)
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#endif
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typedef unsigned short LITTLENUM_TYPE;
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