factor/vm/bignum.hpp

namespace factor {

// Copyright (C) 1989-1992 Massachusetts Institute of Technology
// Portions copyright (C) 2004-2009 Slava Pestov

// This material was developed by the Scheme project at the Massachusetts
// Institute of Technology, Department of Electrical Engineering and
// Computer Science.  Permission to copy and modify this software, to
// redistribute either the original software or a modified version, and
// to use this software for any purpose is granted, subject to the
// following restrictions and understandings.

// 1. Any copy made of this software must include this copyright notice
// in full.

// 2. Users of this software agree to make their best efforts (a) to
// return to the MIT Scheme project any improvements or extensions that
// they make, so that these may be included in future releases; and (b)
// to inform MIT of noteworthy uses of this software.

// 3. All materials developed as a consequence of the use of this
// software shall duly acknowledge such use, in accordance with the usual
// standards of acknowledging credit in academic research.

// 4. MIT has made no warrantee or representation that the operation of
// this software will be error-free, and MIT is under no obligation to
// provide any services, by way of maintenance, update, or otherwise.

// 5. In conjunction with products arising from the use of this material,
// there shall be no use of the name of the Massachusetts Institute of
// Technology nor of any adaptation thereof in any advertising,
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// MIT in each case.

#define BIGNUM_OUT_OF_BAND ((bignum*)0)

enum bignum_comparison {
  BIGNUM_COMPARISON_EQUAL = 0,
  BIGNUM_COMPARISON_LESS = -1,
  BIGNUM_COMPARISON_GREATER = 1
};

cell bignum_maybe_to_fixnum(bignum* bn);
cell bignum_to_cell(bignum* bn);
fixnum bignum_to_fixnum(bignum* bn);
int64_t bignum_to_long_long(bignum* bn);
uint64_t bignum_to_ulong_long(bignum* bn);

}