fbook.h

   1 #ifndef PACHI_FBOOK_H
   2 #define PACHI_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         int movecnt;
  16
  17 #define fbook_hash_bits 20 // 12M w/ 32-bit coord_t
  18 #define fbook_hash_mask ((1 << fbook_hash_bits) - 1)
  19         /* pass == no move in this position */
  20         coord_t moves[1<<fbook_hash_bits];
  21         hash_t hashes[1<<fbook_hash_bits];
  22 };
  23
  24 coord_t fbook_check(struct board *board);
  25 struct fbook *fbook_init(char *filename, struct board *b);
  26 void fbook_done(struct fbook *fbook);
  27
  28 #endif