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-rw-r--r--contrib/syslinux/latest/com32/sysdump/rbtree.c132
1 files changed, 0 insertions, 132 deletions
diff --git a/contrib/syslinux/latest/com32/sysdump/rbtree.c b/contrib/syslinux/latest/com32/sysdump/rbtree.c
deleted file mode 100644
index 1d10e09..0000000
--- a/contrib/syslinux/latest/com32/sysdump/rbtree.c
+++ /dev/null
@@ -1,132 +0,0 @@
-/* ----------------------------------------------------------------------- *
- *
- * 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
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * ----------------------------------------------------------------------- */
-
-/*
- * rbtree.c
- *
- * Simple implementation of a left-leaning red-black tree with 64-bit
- * integer keys. The search operation will return the highest node <=
- * the key; only search and insert are supported, but additional
- * standard llrbtree operations can be coded up at will.
- *
- * See http://www.cs.princeton.edu/~rs/talks/LLRB/RedBlack.pdf for
- * information about left-leaning red-black trees.
- */
-
-#include <stdlib.h>
-#include "rbtree.h"
-
-struct rbtree *rb_search(struct rbtree *tree, uint64_t key)
-{
- struct rbtree *best = NULL;
-
- while (tree) {
- if (tree->key == key)
- return tree;
- else if (tree->key > key)
- tree = tree->left;
- else {
- best = tree;
- tree = tree->right;
- }
- }
- return best;
-}
-
-static bool is_red(struct rbtree *h)
-{
- return h && h->red;
-}
-
-static struct rbtree *rotate_left(struct rbtree *h)
-{
- struct rbtree *x = h->right;
- h->right = x->left;
- x->left = h;
- x->red = x->left->red;
- x->left->red = true;
- return x;
-}
-
-static struct rbtree *rotate_right(struct rbtree *h)
-{
- struct rbtree *x = h->left;
- h->left = x->right;
- x->right = h;
- x->red = x->right->red;
- x->right->red = true;
- return x;
-}
-
-static void color_flip(struct rbtree *h)
-{
- h->red = !h->red;
- h->left->red = !h->left->red;
- h->right->red = !h->right->red;
-}
-
-struct rbtree *rb_insert(struct rbtree *tree, struct rbtree *node)
-{
- node->left = node->right = NULL;
- node->red = false;
-
- if (!tree) {
- node->red = true;
- return node;
- }
-
- if (is_red(tree->left) && is_red(tree->right))
- color_flip(tree);
-
- if (node->key < tree->key)
- tree->left = rb_insert(tree->left, node);
- else
- tree->right = rb_insert(tree->right, node);
-
- if (is_red(tree->right))
- tree = rotate_left(tree);
-
- if (is_red(tree->left) && is_red(tree->left->left))
- tree = rotate_right(tree);
-
- return tree;
-}
-
-void rb_destroy(struct rbtree *tree)
-{
- if (tree->left)
- rb_destroy(tree->left);
- if (tree->right)
- rb_destroy(tree->right);
- free(tree);
-}