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/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2010 AT&T Intellectual Property *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.opensource.org/licenses/cpl1.0.txt *
* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* David Korn <dgk@research.att.com> *
* Phong Vo <kpv@research.att.com> *
* *
***********************************************************************/
#ifndef _DTHDR_H
#define _DTHDR_H 1
#ifndef _BLD_cdt
#define _BLD_cdt 1
#endif
/* Internal definitions for libcdt.
** Written by Kiem-Phong Vo (5/25/96)
*/
#if _PACKAGE_ast
#include <ast.h>
#endif
#include <cdt.h>
/* short-hand notations */
#define NIL(t) ((t)0)
#define reg register
#define uint unsigned int
#define left hl._left
#define hash hl._hash
#define htab hh._htab
#define head hh._head
/* this must be disjoint from DT_METHODS */
#define DT_FLATTEN 010000 /* dictionary already flattened */
#define DT_WALK 020000 /* hash table being walked */
/* how the Dt_t handle was allocated */
#define DT_MALLOC 0
#define DT_MEMORYF 1
/* max search length before splaying */
#define DT_MINP (sizeof(size_t)*8 - 2)
/* hash start size and load factor */
#define HSLOT (256)
#define HRESIZE(n) ((n) << 1)
#define HLOAD(s) ((s) << 1)
#define HINDEX(n,h) ((h)&((n)-1))
#define UNFLATTEN(dt) \
((dt->data->type&DT_FLATTEN) ? dtrestore(dt,NIL(Dtlink_t*)) : 0)
/* tree rotation/linking functions */
#define rrotate(x,y) ((x)->left = (y)->right, (y)->right = (x))
#define lrotate(x,y) ((x)->right = (y)->left, (y)->left = (x))
#define rlink(r,x) ((r) = (r)->left = (x) )
#define llink(l,x) ((l) = (l)->right = (x) )
#define RROTATE(x,y) (rrotate(x,y), (x) = (y))
#define LROTATE(x,y) (lrotate(x,y), (x) = (y))
#if !_PACKAGE_ast
_BEGIN_EXTERNS_
extern Void_t* malloc _ARG_((size_t));
extern Void_t* realloc _ARG_((Void_t*, size_t));
extern void free _ARG_((Void_t*));
_END_EXTERNS_
#endif
#endif /* _DTHDR_H */
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