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diff --git a/gas/bignum.h b/gas/bignum.h
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+/* 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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! */
+
+/* lengths are in sizeof(littlenum)s */
+
+int bignum_copy PARAMS ((LITTLENUM_TYPE * in, int in_length,
+			 LITTLENUM_TYPE * out, int out_length));
+
+/* end of bignum.h */