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att
GitHub Repository: att/ast
 Path: blob/master/src/cmd/dsslib/ip_t/ptlib.h
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/***********************************************************************

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*                                                                      *

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*               This software is part of the ast package               *

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*          Copyright (c) 2000-2011 AT&T Intellectual Property          *

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*                      and is licensed under the                       *

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*                 Eclipse Public License, Version 1.0                  *

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*                    by AT&T Intellectual Property                     *

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*                                                                      *

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*                A copy of the License is available at                 *

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*          http://www.eclipse.org/org/documents/epl-v10.html           *

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*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *

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*                                                                      *

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*              Information and Software Systems Research               *

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*                            AT&T Research                             *

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*                           Florham Park NJ                            *

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*                                                                      *

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*                 Glenn Fowler <[email protected]>                  *

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*                   Phong Vo <[email protected]>                    *

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*                                                                      *

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***********************************************************************/

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#pragma prototyped

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/*

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 * prefix table private interface

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 *

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 * Glenn Fowler

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 * AT&T Research

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 */

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#ifndef _PTPREFIX_PRIVATE_

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#define _PTPREFIX_PRIVATE_ \

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	Dtlink_t	link;

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#include <cdt.h>

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#include <error.h>

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#include "pt.h"

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#define PTSCAN(t,x,b,m,s) \

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	do								\

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	{								\

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		Ptprefix_t*	_pt_p;					\

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		Ptaddr_t	_pt_min;				\

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		Ptaddr_t	_pt_max;				\

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		Ptaddr_t	m;					\

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		Ptaddr_t	x;					\

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		unsigned int	b;					\

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		for (_pt_p = (Ptprefix_t*)dtfirst((t)->dict); _pt_p; _pt_p = (Ptprefix_t*)dtnext((t)->dict, _pt_p))				\

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		{							\

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			_pt_min = _pt_p->min;				\

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			_pt_max = _pt_p->max;				\

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			do						\

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			{						\

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				x = _pt_min;				\

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				m = 1;					\

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				b = PTBITS;				\

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				while (m &&				\

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				       !(x & ((1<<PTSHIFT)-1)) &&	\

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				       (_pt_min|((m<<PTSHIFT)-1)) <= _pt_max) \

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				{					\

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					x >>= PTSHIFT;			\

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					m <<= PTSHIFT;			\

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					b -= PTSHIFT;			\

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				}					\

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				x = _pt_min;				\

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				s;					\

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				if (!b || (_pt_min += m) < x)		\

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					break;				\

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			} while (_pt_min <= _pt_max);			\

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		}							\

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	} while (0)

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#endif

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