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author | Antoine Pitrou <solipsis@pitrou.net> | 2010-05-09 15:52:27 (GMT) |
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committer | Antoine Pitrou <solipsis@pitrou.net> | 2010-05-09 15:52:27 (GMT) |
commit | f95a1b3c53bdd678b64aa608d4375660033460c3 (patch) | |
tree | a8bee40b1b14e28ff5978ea519f3035a3c399912 /Modules/rotatingtree.c | |
parent | bd250300191133d276a71b395b6428081bf825b8 (diff) | |
download | cpython-f95a1b3c53bdd678b64aa608d4375660033460c3.zip cpython-f95a1b3c53bdd678b64aa608d4375660033460c3.tar.gz cpython-f95a1b3c53bdd678b64aa608d4375660033460c3.tar.bz2 |
Recorded merge of revisions 81029 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r81029 | antoine.pitrou | 2010-05-09 16:46:46 +0200 (dim., 09 mai 2010) | 3 lines
Untabify C files. Will watch buildbots.
........
Diffstat (limited to 'Modules/rotatingtree.c')
-rw-r--r-- | Modules/rotatingtree.c | 160 |
1 files changed, 80 insertions, 80 deletions
diff --git a/Modules/rotatingtree.c b/Modules/rotatingtree.c index 39c6dd5..07e08bc 100644 --- a/Modules/rotatingtree.c +++ b/Modules/rotatingtree.c @@ -14,14 +14,14 @@ static unsigned int random_stream = 0; static int randombits(int bits) { - int result; - if (random_stream < (1U << bits)) { - random_value *= 1082527; - random_stream = random_value; - } - result = random_stream & ((1<<bits)-1); - random_stream >>= bits; - return result; + int result; + if (random_stream < (1U << bits)) { + random_value *= 1082527; + random_stream = random_value; + } + result = random_stream & ((1<<bits)-1); + random_stream >>= bits; + return result; } @@ -30,15 +30,15 @@ randombits(int bits) void RotatingTree_Add(rotating_node_t **root, rotating_node_t *node) { - while (*root != NULL) { - if (KEY_LOWER_THAN(node->key, (*root)->key)) - root = &((*root)->left); - else - root = &((*root)->right); - } - node->left = NULL; - node->right = NULL; - *root = node; + while (*root != NULL) { + if (KEY_LOWER_THAN(node->key, (*root)->key)) + root = &((*root)->left); + else + root = &((*root)->right); + } + node->left = NULL; + node->right = NULL; + *root = node; } /* Locate the node with the given key. This is the most complicated @@ -47,57 +47,57 @@ RotatingTree_Add(rotating_node_t **root, rotating_node_t *node) rotating_node_t * RotatingTree_Get(rotating_node_t **root, void *key) { - if (randombits(3) != 4) { - /* Fast path, no rebalancing */ - rotating_node_t *node = *root; - while (node != NULL) { - if (node->key == key) - return node; - if (KEY_LOWER_THAN(key, node->key)) - node = node->left; - else - node = node->right; - } - return NULL; - } - else { - rotating_node_t **pnode = root; - rotating_node_t *node = *pnode; - rotating_node_t *next; - int rotate; - if (node == NULL) - return NULL; - while (1) { - if (node->key == key) - return node; - rotate = !randombits(1); - if (KEY_LOWER_THAN(key, node->key)) { - next = node->left; - if (next == NULL) - return NULL; - if (rotate) { - node->left = next->right; - next->right = node; - *pnode = next; - } - else - pnode = &(node->left); - } - else { - next = node->right; - if (next == NULL) - return NULL; - if (rotate) { - node->right = next->left; - next->left = node; - *pnode = next; - } - else - pnode = &(node->right); - } - node = next; - } - } + if (randombits(3) != 4) { + /* Fast path, no rebalancing */ + rotating_node_t *node = *root; + while (node != NULL) { + if (node->key == key) + return node; + if (KEY_LOWER_THAN(key, node->key)) + node = node->left; + else + node = node->right; + } + return NULL; + } + else { + rotating_node_t **pnode = root; + rotating_node_t *node = *pnode; + rotating_node_t *next; + int rotate; + if (node == NULL) + return NULL; + while (1) { + if (node->key == key) + return node; + rotate = !randombits(1); + if (KEY_LOWER_THAN(key, node->key)) { + next = node->left; + if (next == NULL) + return NULL; + if (rotate) { + node->left = next->right; + next->right = node; + *pnode = next; + } + else + pnode = &(node->left); + } + else { + next = node->right; + if (next == NULL) + return NULL; + if (rotate) { + node->right = next->left; + next->left = node; + *pnode = next; + } + else + pnode = &(node->right); + } + node = next; + } + } } /* Enumerate all nodes in the tree. The callback enumfn() should return @@ -105,17 +105,17 @@ RotatingTree_Get(rotating_node_t **root, void *key) A non-zero value is directly returned by RotatingTree_Enum(). */ int RotatingTree_Enum(rotating_node_t *root, rotating_tree_enum_fn enumfn, - void *arg) + void *arg) { - int result; - rotating_node_t *node; - while (root != NULL) { - result = RotatingTree_Enum(root->left, enumfn, arg); - if (result != 0) return result; - node = root->right; - result = enumfn(root, arg); - if (result != 0) return result; - root = node; - } - return 0; + int result; + rotating_node_t *node; + while (root != NULL) { + result = RotatingTree_Enum(root->left, enumfn, arg); + if (result != 0) return result; + node = root->right; + result = enumfn(root, arg); + if (result != 0) return result; + root = node; + } + return 0; } |