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tree.h: K&R formatting and typo cosmetics

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This commit is contained in:
Diego Biurrun 2013-07-30 19:41:47 +02:00
parent 9696740af7
commit a9b04b2c43
1 changed files with 22 additions and 10 deletions
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32
libavutil/tree.h
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@ -34,10 +34,10 @@
* @addtogroup lavu_tree AVTree
* @ingroup lavu_data
*
* Low complexity tree container
* Low-complexity tree container
*
* Insertion, removal, finding equal, largest which is smaller than and
* smallest which is larger than, all have O(log n) worst case complexity.
* smallest which is larger than, all have O(log n) worst-case complexity.
* @{
*/
@ -58,10 +58,11 @@ struct AVTreeNode *av_tree_node_alloc(void);
* @param next If next is not NULL, then next[0] will contain the previous
* element and next[1] the next element. If either does not exist,
* then the corresponding entry in next is unchanged.
* @return An element with cmp(key, elem)==0 or NULL if no such element exists in
* the tree.
* @return An element with cmp(key, elem) == 0 or NULL if no such element
* exists in the tree.
*/
void *av_tree_find(const struct AVTreeNode *root, void *key, int (*cmp)(void *key, const void *b), void *next[2]);
void *av_tree_find(const struct AVTreeNode *root, void *key,
int (*cmp)(void *key, const void *b), void *next[2]);
/**
* Insert or remove an element.
@ -82,11 +83,17 @@ void *av_tree_find(const struct AVTreeNode *root, void *key, int (*cmp)(void *ke
* lower overhead compared to many malloced elements.
* You might want to define a function like:
* @code
* void *tree_insert(struct AVTreeNode **rootp, void *key, int (*cmp)(void *key, const void *b), AVTreeNode **next){
* if(!*next) *next= av_mallocz(av_tree_node_size);
* void *tree_insert(struct AVTreeNode **rootp, void *key,
* int (*cmp)(void *key, const void *b),
* AVTreeNode **next)
* {
* if (!*next)
* *next = av_mallocz(av_tree_node_size);
* return av_tree_insert(rootp, key, cmp, next);
* }
* void *tree_remove(struct AVTreeNode **rootp, void *key, int (*cmp)(void *key, const void *b, AVTreeNode **next)){
* void *tree_remove(struct AVTreeNode **rootp, void *key,
* int (*cmp)(void *key, const void *b, AVTreeNode **next))
* {
* av_freep(next);
* return av_tree_insert(rootp, key, cmp, next);
* }
@ -96,7 +103,10 @@ void *av_tree_find(const struct AVTreeNode *root, void *key, int (*cmp)(void *ke
* Which one it is depends on the tree state and the implementation. You
* should make no assumptions that it's one or the other in the code.
*/
void *av_tree_insert(struct AVTreeNode **rootp, void *key, int (*cmp)(void *key, const void *b), struct AVTreeNode **next);
void *av_tree_insert(struct AVTreeNode **rootp, void *key,
int (*cmp)(void *key, const void *b),
struct AVTreeNode **next);
void av_tree_destroy(struct AVTreeNode *t);
/**
@ -109,7 +119,9 @@ void av_tree_destroy(struct AVTreeNode *t);
* @note The cmp function should use the same ordering used to construct the
* tree.
*/
void av_tree_enumerate(struct AVTreeNode *t, void *opaque, int (*cmp)(void *opaque, void *elem), int (*enu)(void *opaque, void *elem));
void av_tree_enumerate(struct AVTreeNode *t, void *opaque,
int (*cmp)(void *opaque, void *elem),
int (*enu)(void *opaque, void *elem));
/**
* @}