hash.h

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#ifndef EDAX_HASH_H
#define EDAX_HASH_H

#include "board.h"
#include "settings.h"
#include "util.h"
#include "stats.h"


#include <stdbool.h>
#include <stdio.h>

typedef struct HashData {
        unsigned char depth;      
        unsigned char selectivity;
        unsigned char cost;       
        unsigned char date;       
        signed char lower;        
        signed char upper;        
        unsigned char move[2];    
} HashData;

typedef struct Hash {
        HASH_COLLISIONS(unsigned long long key;)
        Board board;
        HashData data;
} Hash;

typedef struct HashLock {
        SpinLock spin;
} HashLock;

typedef struct HashTable {
        void *memory;                 
        Hash *hash;                               
        HashLock *lock;               
        unsigned long long hash_mask; 
        unsigned int lock_mask;       
        int n_hash;                   
        int n_lock;                   
        unsigned char date;           
} HashTable;

/* declaration */
void hash_code_init(void);
void hash_move_init(void);
void hash_init(HashTable*, const unsigned long long);
void hash_cleanup(HashTable*);
void hash_clear(HashTable*);
void hash_free(HashTable*);
void hash_store(HashTable*, const Board*, const unsigned long long, const int, const int, const int, const int, const int, const int, const int);
void hash_force(HashTable*, const Board*, const unsigned long long, const int, const int, const int, const int, const int, const int, const int);
bool hash_get(HashTable*, const Board*, const unsigned long long, HashData *);
void hash_copy(const HashTable*, HashTable*);
void hash_print(const HashData*, FILE*);
void hash_feed(HashTable*, const Board*, const unsigned long long, const int, const int, const int, const int, const int);
void hash_exclude_move(HashTable*, const Board*, const unsigned long long, const int);
extern unsigned int writeable_level(HashData *data);

extern const HashData HASH_DATA_INIT;
extern unsigned long long hash_rank[16][256];
extern unsigned long long hash_move[64][60];

#endif