bithelp.h
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	/* bithelp.h - Some bit manipulation helpers
	* Copyright (C) 1999, 2002 Free Software Foundation, Inc.
	*
	* This file is part of Libgcrypt.
	*
	* Libgcrypt is free software; you can redistribute it and/or modify
	* it under the terms of the GNU Lesser general Public License as
	* published by the Free Software Foundation; either version 2.1 of
	* the License, or (at your option) any later version.
	*
	* Libgcrypt 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 Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public
	* License along with this program; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
	*/
	#ifndef G10_BITHELP_H
	#define G10_BITHELP_H


	/****************
	* Rotate the 32 bit unsigned integer X by N bits left/right
	*/
	#if defined(__GNUC__) && defined(__i386__)
	static inline u32
	rol( u32 x, int n)
	{
	__asm__("roll %%cl,%0"
	:"=r" (x)
	:"0" (x),"c" (n));
	return x;
	}
	#else
	#define rol(x,n) ( ((x) << (n)) \| ((x) >> (32-(n))) )
	#endif

	#if defined(__GNUC__) && defined(__i386__)
	static inline u32
	ror(u32 x, int n)
	{
	__asm__("rorl %%cl,%0"
	:"=r" (x)
	:"0" (x),"c" (n));
	return x;
	}
	#else
	#define ror(x,n) ( ((x) >> (n)) \| ((x) << (32-(n))) )
	#endif


	#endif /G10_BITHELP_H/