mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-19 18:46:30 +00:00
67 lines
2.4 KiB
C
67 lines
2.4 KiB
C
/* A splay-tree datatype.
|
|
Copyright (C) 1998-2015 Free Software Foundation, Inc.
|
|
Contributed by Mark Mitchell (mark@markmitchell.com).
|
|
|
|
This file is part of the GNU Offloading and Multi Processing Library
|
|
(libgomp).
|
|
|
|
Libgomp 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 3, or (at your option)
|
|
any later version.
|
|
|
|
Libgomp 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.
|
|
|
|
Under Section 7 of GPL version 3, you are granted additional
|
|
permissions described in the GCC Runtime Library Exception, version
|
|
3.1, as published by the Free Software Foundation.
|
|
|
|
You should have received a copy of the GNU General Public License and
|
|
a copy of the GCC Runtime Library Exception along with this program;
|
|
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
/* The splay tree code copied from include/splay-tree.h and adjusted,
|
|
so that all the data lives directly in splay_tree_node_s structure
|
|
and no extra allocations are needed.
|
|
|
|
Files including this header should before including it add:
|
|
typedef struct splay_tree_node_s *splay_tree_node;
|
|
typedef struct splay_tree_s *splay_tree;
|
|
typedef struct splay_tree_key_s *splay_tree_key;
|
|
define splay_tree_key_s structure, and define
|
|
splay_compare inline function. */
|
|
|
|
/* For an easily readable description of splay-trees, see:
|
|
|
|
Lewis, Harry R. and Denenberg, Larry. Data Structures and Their
|
|
Algorithms. Harper-Collins, Inc. 1991.
|
|
|
|
The major feature of splay trees is that all basic tree operations
|
|
are amortized O(log n) time for a tree with n nodes. */
|
|
|
|
#ifndef _SPLAY_TREE_H
|
|
#define _SPLAY_TREE_H 1
|
|
|
|
/* The nodes in the splay tree. */
|
|
struct splay_tree_node_s {
|
|
struct splay_tree_key_s key;
|
|
/* The left and right children, respectively. */
|
|
splay_tree_node left;
|
|
splay_tree_node right;
|
|
};
|
|
|
|
/* The splay tree. */
|
|
struct splay_tree_s {
|
|
splay_tree_node root;
|
|
};
|
|
|
|
extern splay_tree_key splay_tree_lookup (splay_tree, splay_tree_key);
|
|
extern void splay_tree_insert (splay_tree, splay_tree_node);
|
|
extern void splay_tree_remove (splay_tree, splay_tree_key);
|
|
|
|
#endif /* _SPLAY_TREE_H */
|