HCha/Stockfish
1
0
Fork 0
mirror of https://github.com/HChaZZY/Stockfish.git synced 2025-12-20 09:06:45 +08:00
Code Issues Packages Projects Releases Wiki Activity

Syzygy tablebases

Browse Source 
Adds support for Syzygy tablebases to Stockfish.  See
the Readme for information on using the tablebases.

Tablebase support can be enabled/disabled at the Makefile
level as well, by setting syzygy=yes or syzygy=no.

Big/little endian are both supported.

No functional change (if Tablebases are not used).

Resolves #6
This commit is contained in:
Ronald de Man
2014-11-26 07:45:28 +08:00
committed by Gary Linscott
parent 4509eb1342
commit 7caa6cd338
12 changed files with 2837 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
src/position.h
View File

@@ -24,9 +24,9 @@
#include <cstddef>
#include "bitboard.h"
#include "bitcount.h"
#include "types.h"
/// The checkInfo struct is initialized at c'tor time and keeps info used
/// to detect if a move gives check.
class Position;
@@ -100,6 +100,7 @@ public:
bool empty(Square s) const;
template<PieceType Pt> int count(Color c) const;
template<PieceType Pt> const Square* list(Color c) const;
int total_piece_count() const;
// Castling
int can_castle(Color c) const;
@@ -166,6 +167,7 @@ public:
uint64_t nodes_searched() const;
void set_nodes_searched(uint64_t n);
bool is_draw() const;
int rule50_count() const;
// Position consistency check, for debugging
bool pos_is_ok(int* step = NULL) const;
@@ -352,6 +354,14 @@ inline int Position::game_ply() const {
return gamePly;
}
inline int Position::rule50_count() const {
return st->rule50;
}
inline int Position::total_piece_count() const {
return HasPopCnt ? popcount<Full>(pieces()) : pieceCount[WHITE][ALL_PIECES];
}
inline bool Position::opposite_bishops() const {
return pieceCount[WHITE][BISHOP] == 1
@@ -402,6 +412,8 @@ inline void Position::put_piece(Square s, Color c, PieceType pt) {
byColorBB[c] |= s;
index[s] = pieceCount[c][pt]++;
pieceList[c][pt][index[s]] = s;
if (!HasPopCnt)
pieceCount[WHITE][ALL_PIECES]++;
}
inline void Position::move_piece(Square from, Square to, Color c, PieceType pt) {
@@ -432,6 +444,8 @@ inline void Position::remove_piece(Square s, Color c, PieceType pt) {
index[lastSquare] = index[s];
pieceList[c][pt][index[lastSquare]] = lastSquare;
pieceList[c][pt][pieceCount[c][pt]] = SQ_NONE;
if (!HasPopCnt)
pieceCount[WHITE][ALL_PIECES]--;
}
#endif // #ifndef POSITION_H_INCLUDED