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Rearrange avlnode / padding, add threaded AVL functions

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This commit is contained in:
Howard Chu 2005-09-21 11:26:56 +00:00
parent cff4c03e9e
commit b6e38a12bf
1 changed files with 32 additions and 3 deletions
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35
include/avl.h
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@ -40,11 +40,16 @@ typedef struct avlnode Avlnode;
struct avlnode {
void* avl_data;
signed int avl_bf;
struct avlnode *avl_left;
struct avlnode *avl_right;
struct avlnode *avl_link[2];
char avl_bits[2];
signed char avl_bf;
};
#define avl_left avl_link[0]
#define avl_right avl_link[1]
#define avl_lbit avl_bits[0]
#define avl_rbit avl_bits[1]
#ifdef AVL_INTERNAL
#define NULLAVL ((Avlnode *) NULL)
@ -54,12 +59,21 @@ struct avlnode {
#define EH 0
#define RH 1
/* thread bits */
#define AVL_THREAD 0
#define AVL_CHILD 1
/* avl routines */
#define avl_getone(x) ((x) == 0 ? 0 : (x)->avl_data)
#define avl_onenode(x) ((x) == 0 || ((x)->avl_left == 0 && (x)->avl_right == 0))
#endif /* AVL_INTERNALS */
#define avl_child(x,dir) ((x)->avl_bits[dir]) == AVL_CHILD ? \
(x)->avl_link[dir] : NULL
#define avl_lchild(x) avl_child(x,0)
#define avl_rchild(x) avl_child(x,1)
typedef int (*AVL_APPLY) LDAP_P((void *, void*));
typedef int (*AVL_CMP) LDAP_P((const void*, const void*));
typedef int (*AVL_DUP) LDAP_P((void*, void*));
@ -103,6 +117,21 @@ avl_apply LDAP_P((Avlnode *, AVL_APPLY, void*, int, int));
LDAP_AVL_F( int )
avl_prefixapply LDAP_P((Avlnode *, void*, AVL_CMP, void*, AVL_CMP, void*, int));
LDAP_AVL_F( int )
tavl_free LDAP_P(( Avlnode *root, AVL_FREE dfree ));
LDAP_AVL_F( int )
tavl_insert LDAP_P((Avlnode **, void*, AVL_CMP, AVL_DUP));
LDAP_AVL_F( void* )
tavl_delete LDAP_P((Avlnode **, void*, AVL_CMP));
LDAP_AVL_F( void* )
tavl_find LDAP_P((Avlnode *, const void*, AVL_CMP));
LDAP_AVL_F( Avlnode* )
tavl_find2 LDAP_P((Avlnode *, const void*, AVL_CMP));
/* apply traversal types */
#define AVL_PREORDER 1
#define AVL_INORDER 2