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mysys/my_tree.h
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extern "C" {
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#endif
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#include "my_base.h"            /* get 'enum ha_rkey_function' */
 
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#include <drizzled/base.h>              /* get 'enum ha_rkey_function' */
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/* Worst case tree is half full. This gives use 2^(MAX_TREE_HEIGHT/2) leafs */
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#define MAX_TREE_HEIGHT 64
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#define TREE_NO_DUPS 1
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typedef enum { left_root_right, right_root_left } TREE_WALK;
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typedef uint32 element_count;
 
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typedef uint32_t element_count;
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typedef int (*tree_walk_action)(void *,element_count,void *);
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typedef enum { free_init, free_free, free_end } TREE_FREE;
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typedef struct st_tree_element {
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  struct st_tree_element *left,*right;
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  uint32 count:31,
 
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  uint32_t count:31,
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         colour:1;                      /* black is marked as 1 */
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} TREE_ELEMENT;
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