fbook.h

   1 #ifndef ZZGO_FBOOK_H
   2 #define ZZGO_FBOOK_H
   3
   4 #include "move.h"
   5
   6 struct board;
   7
   8 /* Opening book (fbook as in "forcing book" since the move is just
   9  * played unconditionally if found, or possibly "fuseki book"). */
  10
  11 struct fbook {
  12         int bsize;
  13         int handicap;
  14
  15 #define fbook_hash_bits 16 // 1M w/ 32-bit coord_t
  16 #define fbook_hash_mask ((1 << fbook_hash_bits) - 1)
  17         /* pass == no move in this position */
  18         coord_t moves[1<<fbook_hash_bits];
  19         hash_t hashes[1<<fbook_hash_bits];
  20 };
  21
  22 coord_t fbook_check(struct board *board);
  23 struct fbook *fbook_init(char *filename, struct board *b);
  24 void fbook_done(struct fbook *fbook);
  25
  26 #endif