xref: /external/syslinux/com32/sysdump/rbtree.h

/* ----------------------------------------------------------------------- *
 *
 *   Copyright 1996-2009 The NASM Authors - All Rights Reserved
 *   See the file AUTHORS included with the NASM distribution for
 *   the specific copyright holders.
 *
 *   Redistribution and use in source and binary forms, with or without
 *   modification, are permitted provided that the following
 *   conditions are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above
 *     copyright notice, this list of conditions and the following
 *     disclaimer in the documentation and/or other materials provided
 *     with the distribution.
 *
 *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
 *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
 *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 * ----------------------------------------------------------------------- */

#ifndef NASM_RBTREE_H
#define NASM_RBTREE_H

#include <inttypes.h>
#include <stdbool.h>

/* This structure should be embedded in a larger data structure;
   the final output from rb_search() can then be converted back
   to the larger data structure via container_of(). */
struct rbtree {
    uint64_t key;
    struct rbtree *left, *right;
    bool red;
};

struct rbtree *rb_insert(struct rbtree *, struct rbtree *);
struct rbtree *rb_search(struct rbtree *, uint64_t);
void rb_destroy(struct rbtree *);

#endif /* NASM_RBTREE_H */