/// | only in 64-bit mode. For compiling requires hardware with
/// | popcnt support.
+#include <cctype>
#include <climits>
#include <cstdlib>
-#if defined(_MSC_VER)
-
-// Disable some silly and noisy warning from MSVC compiler
-#pragma warning(disable: 4127) // Conditional expression is constant
-#pragma warning(disable: 4146) // Unary minus operator applied to unsigned type
-#pragma warning(disable: 4800) // Forcing value to bool 'true' or 'false'
-
-// MSVC does not support <inttypes.h>
-typedef signed __int8 int8_t;
-typedef unsigned __int8 uint8_t;
-typedef signed __int16 int16_t;
-typedef unsigned __int16 uint16_t;
-typedef signed __int32 int32_t;
-typedef unsigned __int32 uint32_t;
-typedef signed __int64 int64_t;
-typedef unsigned __int64 uint64_t;
-
-#else
-# include <inttypes.h>
-#endif
+#include "platform.h"
#if defined(_WIN64)
# include <intrin.h> // MSVC popcnt and bsfq instrinsics
typedef uint64_t Key;
typedef uint64_t Bitboard;
-const int MAX_MOVES = 256;
-const int MAX_PLY = 256;
+const int MAX_MOVES = 192;
+const int MAX_PLY = 100;
const int MAX_PLY_PLUS_2 = MAX_PLY + 2;
const Bitboard FileABB = 0x0101010101010101ULL;
MOVE_NULL = 65
};
-struct MoveStack {
- Move move;
- int score;
+enum MoveType {
+ NORMAL = 0,
+ PROMOTION = 1 << 14,
+ ENPASSANT = 2 << 14,
+ CASTLE = 3 << 14
};
-inline bool operator<(const MoveStack& f, const MoveStack& s) {
- return f.score < s.score;
-}
-
-enum CastleRight {
+enum CastleRight { // Defined as in PolyGlot book hash key
CASTLES_NONE = 0,
WHITE_OO = 1,
- BLACK_OO = 2,
- WHITE_OOO = 4,
+ WHITE_OOO = 2,
+ BLACK_OO = 4,
BLACK_OOO = 8,
ALL_CASTLES = 15
};
+enum CastlingSide {
+ KING_SIDE,
+ QUEEN_SIDE
+};
+
enum ScaleFactor {
SCALE_FACTOR_DRAW = 0,
SCALE_FACTOR_NORMAL = 64,
};
enum PieceType {
- NO_PIECE_TYPE = 0,
+ NO_PIECE_TYPE = 0, ALL_PIECES = 0,
PAWN = 1, KNIGHT = 2, BISHOP = 3, ROOK = 4, QUEEN = 5, KING = 6
};
return make_score(mg_value(s) / i, eg_value(s) / i);
}
+/// Weight score v by score w trying to prevent overflow
+inline Score apply_weight(Score v, Score w) {
+ return make_score((int(mg_value(v)) * mg_value(w)) / 0x100,
+ (int(eg_value(v)) * eg_value(w)) / 0x100);
+}
+
#undef ENABLE_OPERATORS_ON
#undef ENABLE_SAFE_OPERATORS_ON
-const Value PawnValueMidgame = Value(0x0C6);
-const Value PawnValueEndgame = Value(0x102);
-const Value KnightValueMidgame = Value(0x331);
-const Value KnightValueEndgame = Value(0x34E);
-const Value BishopValueMidgame = Value(0x344);
-const Value BishopValueEndgame = Value(0x359);
-const Value RookValueMidgame = Value(0x4F6);
-const Value RookValueEndgame = Value(0x4FE);
-const Value QueenValueMidgame = Value(0x9D9);
-const Value QueenValueEndgame = Value(0x9FE);
+const Value PawnValueMidgame = Value(198);
+const Value PawnValueEndgame = Value(258);
+const Value KnightValueMidgame = Value(817);
+const Value KnightValueEndgame = Value(846);
+const Value BishopValueMidgame = Value(836);
+const Value BishopValueEndgame = Value(857);
+const Value RookValueMidgame = Value(1270);
+const Value RookValueEndgame = Value(1278);
+const Value QueenValueMidgame = Value(2521);
+const Value QueenValueEndgame = Value(2558);
extern const Value PieceValueMidgame[17]; // Indexed by Piece or PieceType
extern const Value PieceValueEndgame[17];
extern int SquareDistance[64][64];
-extern uint8_t BitCount8Bit[256];
+
+struct MoveStack {
+ Move move;
+ int score;
+};
+
+inline bool operator<(const MoveStack& f, const MoveStack& s) {
+ return f.score < s.score;
+}
inline Color operator~(Color c) {
return Color(c ^ 1);
}
inline Square operator~(Square s) {
- return Square(s ^ 56);
+ return Square(s ^ 56); // Vertical flip SQ_A1 -> SQ_A8
+}
+
+inline Square operator|(File f, Rank r) {
+ return Square((r << 3) | f);
}
inline Value mate_in(int ply) {
return Piece((c << 3) | pt);
}
+inline CastleRight make_castle_right(Color c, CastlingSide s) {
+ return CastleRight(WHITE_OO << ((s == QUEEN_SIDE) + 2 * c));
+}
+
inline PieceType type_of(Piece p) {
return PieceType(p & 7);
}
return Color(p >> 3);
}
-inline Square make_square(File f, Rank r) {
- return Square((r << 3) | f);
-}
-
-inline bool square_is_ok(Square s) {
+inline bool is_ok(Square s) {
return s >= SQ_A1 && s <= SQ_H8;
}
}
inline Square mirror(Square s) {
- return Square(s ^ 7);
+ return Square(s ^ 7); // Horizontal flip SQ_A1 -> SQ_H1
}
inline Square relative_square(Color c, Square s) {
}
inline bool opposite_colors(Square s1, Square s2) {
- int s = s1 ^ s2;
+ int s = int(s1) ^ int(s2);
return ((s >> 3) ^ s) & 1;
}
return SquareDistance[s1][s2];
}
-inline char piece_type_to_char(PieceType pt) {
- return " PNBRQK"[pt];
-}
-
inline char file_to_char(File f) {
return char(f - FILE_A + int('a'));
}
return Square(m & 0x3F);
}
-inline bool is_special(Move m) {
- return m & (3 << 14);
-}
-
-inline bool is_promotion(Move m) {
- return (m & (3 << 14)) == (1 << 14);
-}
-
-inline int is_enpassant(Move m) {
- return (m & (3 << 14)) == (2 << 14);
-}
-
-inline int is_castle(Move m) {
- return (m & (3 << 14)) == (3 << 14);
+inline MoveType type_of(Move m) {
+ return MoveType(m & (3 << 14));
}
inline PieceType promotion_type(Move m) {
return Move(to | (from << 6));
}
-inline Move make_promotion(Square from, Square to, PieceType pt) {
- return Move(to | (from << 6) | (1 << 14) | ((pt - 2) << 12)) ;
-}
-
-inline Move make_enpassant(Square from, Square to) {
- return Move(to | (from << 6) | (2 << 14));
-}
-
-inline Move make_castle(Square from, Square to) {
- return Move(to | (from << 6) | (3 << 14));
+template<MoveType T>
+inline Move make(Square from, Square to, PieceType pt = KNIGHT) {
+ return Move(to | (from << 6) | T | ((pt - KNIGHT) << 12)) ;
}
inline bool is_ok(Move m) {
projects / stockfish / blobdiff