50 lines
2.0 KiB
C
50 lines
2.0 KiB
C
/*
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* Copyright (c) 2013, Peter Rutenbar <pruten@gmail.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _REDBLACK_H
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#define _REDBLACK_H
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typedef uint32_t rb_key_t;
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typedef void* rb_value_t;
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typedef struct _rb_node {
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struct _rb_node *left, *right, *parent;
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rb_key_t key;
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rb_value_t value;
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uint8_t is_red : 1;
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} rb_node;
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typedef rb_node* rb_tree;
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rb_tree* rb_new();
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void rb_free (rb_tree *tree);
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uint8_t rb_insert (rb_tree *root, rb_key_t key, rb_value_t value, rb_value_t *old_value);
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uint8_t rb_find (rb_tree *tree, rb_key_t key, rb_value_t *value);
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uint8_t rb_index (rb_tree *tree, uint32_t index, rb_key_t *key, rb_value_t *value);
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uint32_t rb_count (rb_tree *tree);
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#endif // _REDBLACK_H
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