X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Ftypes.h;h=7c5776ab3baaad266c790e90efc60bf4a7280152;hp=aa1f34fc112eaadf00663778a94a5e3ba11f2440;hb=950c8436edc50857b83eb3e0cbaca06407764655;hpb=5a156df719790ddd882a928ddf721f8ba81587b1 diff --git a/src/types.h b/src/types.h index aa1f34fc..7c5776ab 100644 --- a/src/types.h +++ b/src/types.h @@ -1,7 +1,7 @@ /* Stockfish, a UCI chess playing engine derived from Glaurung 2.1 Copyright (C) 2004-2008 Tord Romstad (Glaurung author) - Copyright (C) 2008-2012 Marco Costalba, Joona Kiiski, Tord Romstad + Copyright (C) 2008-2015 Marco Costalba, Joona Kiiski, Tord Romstad Stockfish is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -17,23 +17,22 @@ along with this program. If not, see . */ -#if !defined(TYPES_H_INCLUDED) +#ifndef TYPES_H_INCLUDED #define TYPES_H_INCLUDED -/// For Linux and OSX configuration is done automatically using Makefile. To get -/// started type 'make help'. +/// When compiling with provided Makefile (e.g. for Linux and OSX), configuration +/// is done automatically. To get started type 'make help'. /// -/// For Windows, part of the configuration is detected automatically, but some -/// switches need to be set manually: +/// When Makefile is not used (e.g. with Microsoft Visual Studio) some switches +/// need to be set manually: /// -/// -DNDEBUG | Disable debugging mode. Use always. +/// -DNDEBUG | Disable debugging mode. Always use this for release. /// -/// -DNO_PREFETCH | Disable use of prefetch asm-instruction. A must if you want -/// | the executable to run on some very old machines. +/// -DNO_PREFETCH | Disable use of prefetch asm-instruction. You may need this to +/// | run on some very old machines. /// /// -DUSE_POPCNT | Add runtime support for use of popcnt asm-instruction. Works -/// | only in 64-bit mode. For compiling requires hardware with -/// | popcnt support. +/// | only in 64-bit mode and requires hardware with popcnt support. #include #include @@ -42,27 +41,36 @@ #include "platform.h" -#if defined(_WIN64) && !defined(IS_64BIT) +/// Predefined macros hell: +/// +/// __GNUC__ Compiler is gcc, Clang or Intel on Linux +/// __INTEL_COMPILER Compiler is Intel +/// _MSC_VER Compiler is MSVC or Intel on Windows +/// _WIN32 Building on Windows (any) +/// _WIN64 Building on Windows 64 bit + +#if defined(_WIN64) && !defined(IS_64BIT) // Last condition means Makefile is not used # include // MSVC popcnt and bsfq instrinsics # define IS_64BIT # define USE_BSFQ #endif -#if defined(USE_POPCNT) && defined(_MSC_VER) && defined(__INTEL_COMPILER) +#if defined(USE_POPCNT) && defined(__INTEL_COMPILER) && defined(_MSC_VER) # include // Intel header for _mm_popcnt_u64() intrinsic #endif -# if !defined(NO_PREFETCH) && (defined(__INTEL_COMPILER) || defined(_MSC_VER)) -# include // Intel and Microsoft header for _mm_prefetch() -# endif +#if !defined(NO_PREFETCH) && (defined(__INTEL_COMPILER) || defined(_MSC_VER)) +# include // Intel and Microsoft header for _mm_prefetch() +#endif -#if defined(_MSC_VER) || defined(__INTEL_COMPILER) -# define CACHE_LINE_ALIGNMENT __declspec(align(64)) +#if defined(USE_PEXT) +# include // Header for _pext_u64() intrinsic +# define pext(b, m) _pext_u64(b, m) #else -# define CACHE_LINE_ALIGNMENT __attribute__ ((aligned(64))) +# define pext(b, m) (0) #endif -#if defined(_MSC_VER) +#ifdef _MSC_VER # define FORCE_INLINE __forceinline #elif defined(__GNUC__) # define FORCE_INLINE inline __attribute__((always_inline)) @@ -70,13 +78,19 @@ # define FORCE_INLINE inline #endif -#if defined(USE_POPCNT) +#ifdef USE_POPCNT const bool HasPopCnt = true; #else const bool HasPopCnt = false; #endif -#if defined(IS_64BIT) +#ifdef USE_PEXT +const bool HasPext = true; +#else +const bool HasPext = false; +#endif + +#ifdef IS_64BIT const bool Is64Bit = true; #else const bool Is64Bit = false; @@ -85,98 +99,88 @@ const bool Is64Bit = false; typedef uint64_t Key; typedef uint64_t Bitboard; -const int MAX_MOVES = 192; -const int MAX_PLY = 100; -const int MAX_PLY_PLUS_2 = MAX_PLY + 2; - -const Bitboard FileABB = 0x0101010101010101ULL; -const Bitboard FileBBB = FileABB << 1; -const Bitboard FileCBB = FileABB << 2; -const Bitboard FileDBB = FileABB << 3; -const Bitboard FileEBB = FileABB << 4; -const Bitboard FileFBB = FileABB << 5; -const Bitboard FileGBB = FileABB << 6; -const Bitboard FileHBB = FileABB << 7; - -const Bitboard Rank1BB = 0xFF; -const Bitboard Rank2BB = Rank1BB << (8 * 1); -const Bitboard Rank3BB = Rank1BB << (8 * 2); -const Bitboard Rank4BB = Rank1BB << (8 * 3); -const Bitboard Rank5BB = Rank1BB << (8 * 4); -const Bitboard Rank6BB = Rank1BB << (8 * 5); -const Bitboard Rank7BB = Rank1BB << (8 * 6); -const Bitboard Rank8BB = Rank1BB << (8 * 7); - +const int MAX_MOVES = 256; +const int MAX_PLY = 128; /// A move needs 16 bits to be stored /// /// bit 0- 5: destination square (from 0 to 63) /// bit 6-11: origin square (from 0 to 63) /// bit 12-13: promotion piece type - 2 (from KNIGHT-2 to QUEEN-2) -/// bit 14-15: special move flag: promotion (1), en passant (2), castle (3) +/// bit 14-15: special move flag: promotion (1), en passant (2), castling (3) +/// NOTE: EN-PASSANT bit is set only when a pawn can be captured /// /// Special cases are MOVE_NONE and MOVE_NULL. We can sneak these in because in /// any normal move destination square is always different from origin square /// while MOVE_NONE and MOVE_NULL have the same origin and destination square. enum Move { - MOVE_NONE = 0, + MOVE_NONE, MOVE_NULL = 65 }; enum MoveType { - NORMAL = 0, + NORMAL, PROMOTION = 1 << 14, ENPASSANT = 2 << 14, - CASTLE = 3 << 14 + CASTLING = 3 << 14 }; -enum CastleRight { // Defined as in PolyGlot book hash key - CASTLES_NONE = 0, - WHITE_OO = 1, - WHITE_OOO = 2, - BLACK_OO = 4, - BLACK_OOO = 8, - ALL_CASTLES = 15, - CASTLE_RIGHT_NB = 16 +enum Color { + WHITE, BLACK, NO_COLOR, COLOR_NB = 2 }; enum CastlingSide { - KING_SIDE, - QUEEN_SIDE, - CASTLING_SIDE_NB = 2 + KING_SIDE, QUEEN_SIDE, CASTLING_SIDE_NB = 2 +}; + +enum CastlingRight { + NO_CASTLING, + WHITE_OO, + WHITE_OOO = WHITE_OO << 1, + BLACK_OO = WHITE_OO << 2, + BLACK_OOO = WHITE_OO << 3, + ANY_CASTLING = WHITE_OO | WHITE_OOO | BLACK_OO | BLACK_OOO, + CASTLING_RIGHT_NB = 16 +}; + +template struct MakeCastling { + static const CastlingRight + right = C == WHITE ? S == QUEEN_SIDE ? WHITE_OOO : WHITE_OO + : S == QUEEN_SIDE ? BLACK_OOO : BLACK_OO; }; enum Phase { - PHASE_ENDGAME = 0, + PHASE_ENDGAME, PHASE_MIDGAME = 128, MG = 0, EG = 1, PHASE_NB = 2 }; enum ScaleFactor { - SCALE_FACTOR_DRAW = 0, - SCALE_FACTOR_NORMAL = 64, - SCALE_FACTOR_MAX = 128, - SCALE_FACTOR_NONE = 255 + SCALE_FACTOR_DRAW = 0, + SCALE_FACTOR_ONEPAWN = 48, + SCALE_FACTOR_NORMAL = 64, + SCALE_FACTOR_MAX = 128, + SCALE_FACTOR_NONE = 255 }; enum Bound { - BOUND_NONE = 0, - BOUND_UPPER = 1, - BOUND_LOWER = 2, + BOUND_NONE, + BOUND_UPPER, + BOUND_LOWER, BOUND_EXACT = BOUND_UPPER | BOUND_LOWER }; enum Value { VALUE_ZERO = 0, VALUE_DRAW = 0, - VALUE_KNOWN_WIN = 15000, - VALUE_MATE = 30000, - VALUE_INFINITE = 30001, - VALUE_NONE = 30002, + VALUE_KNOWN_WIN = 10000, + VALUE_MATE = 32000, + VALUE_INFINITE = 32001, + VALUE_NONE = 32002, - VALUE_MATE_IN_MAX_PLY = VALUE_MATE - MAX_PLY, - VALUE_MATED_IN_MAX_PLY = -VALUE_MATE + MAX_PLY, + VALUE_MATE_IN_MAX_PLY = VALUE_MATE - 2 * MAX_PLY, + VALUE_MATED_IN_MAX_PLY = -VALUE_MATE + 2 * MAX_PLY, VALUE_ENSURE_INTEGER_SIZE_P = INT_MAX, VALUE_ENSURE_INTEGER_SIZE_N = INT_MIN, @@ -185,36 +189,35 @@ enum Value { KnightValueMg = 817, KnightValueEg = 846, BishopValueMg = 836, BishopValueEg = 857, RookValueMg = 1270, RookValueEg = 1278, - QueenValueMg = 2521, QueenValueEg = 2558 + QueenValueMg = 2521, QueenValueEg = 2558, + + MidgameLimit = 15581, EndgameLimit = 3998 }; enum PieceType { - NO_PIECE_TYPE = 0, ALL_PIECES = 0, - PAWN = 1, KNIGHT = 2, BISHOP = 3, ROOK = 4, QUEEN = 5, KING = 6, + NO_PIECE_TYPE, PAWN, KNIGHT, BISHOP, ROOK, QUEEN, KING, + ALL_PIECES = 0, PIECE_TYPE_NB = 8 }; enum Piece { - NO_PIECE = 0, - W_PAWN = 1, W_KNIGHT = 2, W_BISHOP = 3, W_ROOK = 4, W_QUEEN = 5, W_KING = 6, - B_PAWN = 9, B_KNIGHT = 10, B_BISHOP = 11, B_ROOK = 12, B_QUEEN = 13, B_KING = 14, + NO_PIECE, + W_PAWN = 1, W_KNIGHT, W_BISHOP, W_ROOK, W_QUEEN, W_KING, + B_PAWN = 9, B_KNIGHT, B_BISHOP, B_ROOK, B_QUEEN, B_KING, PIECE_NB = 16 }; -enum Color { - WHITE, BLACK, NO_COLOR, COLOR_NB = 2 -}; - enum Depth { - ONE_PLY = 2, + ONE_PLY = 1, - DEPTH_ZERO = 0 * ONE_PLY, - DEPTH_QS_CHECKS = -1 * ONE_PLY, - DEPTH_QS_NO_CHECKS = -2 * ONE_PLY, - DEPTH_QS_RECAPTURES = -5 * ONE_PLY, + DEPTH_ZERO = 0, + DEPTH_QS_CHECKS = 0, + DEPTH_QS_NO_CHECKS = -1, + DEPTH_QS_RECAPTURES = -5, - DEPTH_NONE = -127 * ONE_PLY + DEPTH_NONE = -6, + DEPTH_MAX = MAX_PLY }; enum Square { @@ -244,76 +247,81 @@ enum Square { }; enum File { - FILE_A, FILE_B, FILE_C, FILE_D, FILE_E, FILE_F, FILE_G, FILE_H, FILE_NB = 8 + FILE_A, FILE_B, FILE_C, FILE_D, FILE_E, FILE_F, FILE_G, FILE_H, FILE_NB }; enum Rank { - RANK_1, RANK_2, RANK_3, RANK_4, RANK_5, RANK_6, RANK_7, RANK_8, RANK_NB = 8 + RANK_1, RANK_2, RANK_3, RANK_4, RANK_5, RANK_6, RANK_7, RANK_8, RANK_NB }; -/// Score enum keeps a midgame and an endgame value in a single integer (enum), -/// first LSB 16 bits are used to store endgame value, while upper bits are used -/// for midgame value. Compiler is free to choose the enum type as long as can -/// keep its data, so ensure Score to be an integer type. +/// Score enum stores a middlegame and an endgame value in a single integer. +/// The least significant 16 bits are used to store the endgame value and +/// the upper 16 bits are used to store the middlegame value. The compiler +/// is free to choose the enum type as long as it can store the data, so we +/// ensure that Score is an integer type by assigning some big int values. enum Score { - SCORE_ZERO = 0, + SCORE_ZERO, SCORE_ENSURE_INTEGER_SIZE_P = INT_MAX, SCORE_ENSURE_INTEGER_SIZE_N = INT_MIN }; -inline Score make_score(int mg, int eg) { return Score((mg << 16) + eg); } +inline Score make_score(int mg, int eg) { + return Score((mg << 16) + eg); +} -/// Extracting the signed lower and upper 16 bits it not so trivial because +/// Extracting the signed lower and upper 16 bits is not so trivial because /// according to the standard a simple cast to short is implementation defined /// and so is a right shift of a signed integer. -inline Value mg_value(Score s) { return Value(((s + 32768) & ~0xffff) / 0x10000); } - -/// On Intel 64 bit we have a small speed regression with the standard conforming -/// version, so use a faster code in this case that, although not 100% standard -/// compliant it seems to work for Intel and MSVC. -#if defined(IS_64BIT) && (!defined(__GNUC__) || defined(__INTEL_COMPILER)) - -inline Value eg_value(Score s) { return Value(int16_t(s & 0xffff)); } - -#else +inline Value mg_value(Score s) { -inline Value eg_value(Score s) { - return Value((int)(unsigned(s) & 0x7fffu) - (int)(unsigned(s) & 0x8000u)); + union { uint16_t u; int16_t s; } mg = { uint16_t(unsigned(s + 0x8000) >> 16) }; + return Value(mg.s); } -#endif +inline Value eg_value(Score s) { -#define ENABLE_SAFE_OPERATORS_ON(T) \ -inline T operator+(const T d1, const T d2) { return T(int(d1) + int(d2)); } \ -inline T operator-(const T d1, const T d2) { return T(int(d1) - int(d2)); } \ -inline T operator*(int i, const T d) { return T(i * int(d)); } \ -inline T operator*(const T d, int i) { return T(int(d) * i); } \ -inline T operator-(const T d) { return T(-int(d)); } \ -inline T& operator+=(T& d1, const T d2) { d1 = d1 + d2; return d1; } \ -inline T& operator-=(T& d1, const T d2) { d1 = d1 - d2; return d1; } \ -inline T& operator*=(T& d, int i) { d = T(int(d) * i); return d; } - -#define ENABLE_OPERATORS_ON(T) ENABLE_SAFE_OPERATORS_ON(T) \ -inline T operator++(T& d, int) { d = T(int(d) + 1); return d; } \ -inline T operator--(T& d, int) { d = T(int(d) - 1); return d; } \ -inline T operator/(const T d, int i) { return T(int(d) / i); } \ -inline T& operator/=(T& d, int i) { d = T(int(d) / i); return d; } - -ENABLE_OPERATORS_ON(Value) -ENABLE_OPERATORS_ON(PieceType) -ENABLE_OPERATORS_ON(Piece) -ENABLE_OPERATORS_ON(Color) -ENABLE_OPERATORS_ON(Depth) -ENABLE_OPERATORS_ON(Square) -ENABLE_OPERATORS_ON(File) -ENABLE_OPERATORS_ON(Rank) - -/// Added operators for adding integers to a Value + union { uint16_t u; int16_t s; } eg = { uint16_t(unsigned(s)) }; + return Value(eg.s); +} + +#define ENABLE_BASE_OPERATORS_ON(T) \ +inline T operator+(T d1, T d2) { return T(int(d1) + int(d2)); } \ +inline T operator-(T d1, T d2) { return T(int(d1) - int(d2)); } \ +inline T operator*(int i, T d) { return T(i * int(d)); } \ +inline T operator*(T d, int i) { return T(int(d) * i); } \ +inline T operator-(T d) { return T(-int(d)); } \ +inline T& operator+=(T& d1, T d2) { return d1 = d1 + d2; } \ +inline T& operator-=(T& d1, T d2) { return d1 = d1 - d2; } \ +inline T& operator*=(T& d, int i) { return d = T(int(d) * i); } + +#define ENABLE_FULL_OPERATORS_ON(T) \ +ENABLE_BASE_OPERATORS_ON(T) \ +inline T& operator++(T& d) { return d = T(int(d) + 1); } \ +inline T& operator--(T& d) { return d = T(int(d) - 1); } \ +inline T operator/(T d, int i) { return T(int(d) / i); } \ +inline int operator/(T d1, T d2) { return int(d1) / int(d2); } \ +inline T& operator/=(T& d, int i) { return d = T(int(d) / i); } + +ENABLE_FULL_OPERATORS_ON(Value) +ENABLE_FULL_OPERATORS_ON(PieceType) +ENABLE_FULL_OPERATORS_ON(Piece) +ENABLE_FULL_OPERATORS_ON(Color) +ENABLE_FULL_OPERATORS_ON(Depth) +ENABLE_FULL_OPERATORS_ON(Square) +ENABLE_FULL_OPERATORS_ON(File) +ENABLE_FULL_OPERATORS_ON(Rank) + +ENABLE_BASE_OPERATORS_ON(Score) + +#undef ENABLE_FULL_OPERATORS_ON +#undef ENABLE_BASE_OPERATORS_ON + +/// Additional operators to add integers to a Value inline Value operator+(Value v, int i) { return Value(int(v) + i); } inline Value operator-(Value v, int i) { return Value(int(v) - i); } - -ENABLE_SAFE_OPERATORS_ON(Score) +inline Value& operator+=(Value& v, int i) { return v = v + i; } +inline Value& operator-=(Value& v, int i) { return v = v - i; } /// Only declared but not defined. We don't want to multiply two scores due to /// a very high risk of overflow. So user should explicitly convert to integer. @@ -324,51 +332,18 @@ inline Score operator/(Score s, int i) { 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 - -namespace Zobrist { - - extern Key psq[COLOR_NB][PIECE_TYPE_NB][SQUARE_NB]; - extern Key enpassant[FILE_NB]; - extern Key castle[CASTLE_RIGHT_NB]; - extern Key side; - extern Key exclusion; - - void init(); -} - -CACHE_LINE_ALIGNMENT - -extern Score pieceSquareTable[PIECE_NB][SQUARE_NB]; extern Value PieceValue[PHASE_NB][PIECE_NB]; -extern int SquareDistance[SQUARE_NB][SQUARE_NB]; - -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); + return Color(c ^ BLACK); } inline Square operator~(Square s) { - return Square(s ^ 56); // Vertical flip SQ_A1 -> SQ_A8 + return Square(s ^ SQ_A8); // Vertical flip SQ_A1 -> SQ_A8 } -inline Square operator|(File f, Rank r) { - return Square((r << 3) | f); +inline CastlingRight operator|(Color c, CastlingSide s) { + return CastlingRight(WHITE_OO << ((s == QUEEN_SIDE) + 2 * c)); } inline Value mate_in(int ply) { @@ -379,21 +354,21 @@ inline Value mated_in(int ply) { return -VALUE_MATE + ply; } -inline Piece make_piece(Color c, PieceType pt) { - return Piece((c << 3) | pt); +inline Square make_square(File f, Rank r) { + return Square((r << 3) | f); } -inline CastleRight make_castle_right(Color c, CastlingSide s) { - return CastleRight(WHITE_OO << ((s == QUEEN_SIDE) + 2 * c)); +inline Piece make_piece(Color c, PieceType pt) { + return Piece((c << 3) | pt); } -inline PieceType type_of(Piece p) { - return PieceType(p & 7); +inline PieceType type_of(Piece pc) { + return PieceType(pc & 7); } -inline Color color_of(Piece p) { - assert(p != NO_PIECE); - return Color(p >> 3); +inline Color color_of(Piece pc) { + assert(pc != NO_PIECE); + return Color(pc >> 3); } inline bool is_ok(Square s) { @@ -408,10 +383,6 @@ inline Rank rank_of(Square s) { return Rank(s >> 3); } -inline Square mirror(Square s) { - return Square(s ^ 7); // Horizontal flip SQ_A1 -> SQ_H1 -} - inline Square relative_square(Color c, Square s) { return Square(s ^ (c * 56)); } @@ -429,26 +400,6 @@ inline bool opposite_colors(Square s1, Square s2) { return ((s >> 3) ^ s) & 1; } -inline int file_distance(Square s1, Square s2) { - return abs(file_of(s1) - file_of(s2)); -} - -inline int rank_distance(Square s1, Square s2) { - return abs(rank_of(s1) - rank_of(s2)); -} - -inline int square_distance(Square s1, Square s2) { - return SquareDistance[s1][s2]; -} - -inline char file_to_char(File f, bool tolower = true) { - return char(f - FILE_A + (tolower ? 'a' : 'A')); -} - -inline char rank_to_char(Rank r) { - return char(r - RANK_1 + '1'); -} - inline Square pawn_push(Color c) { return c == WHITE ? DELTA_N : DELTA_S; } @@ -479,14 +430,7 @@ inline Move make(Square from, Square to, PieceType pt = KNIGHT) { } inline bool is_ok(Move m) { - return from_sq(m) != to_sq(m); // Catches also MOVE_NULL and MOVE_NONE -} - -#include - -inline const std::string square_to_string(Square s) { - char ch[] = { file_to_char(file_of(s)), rank_to_char(rank_of(s)), 0 }; - return ch; + return from_sq(m) != to_sq(m); // Catch MOVE_NULL and MOVE_NONE } -#endif // !defined(TYPES_H_INCLUDED) +#endif // #ifndef TYPES_H_INCLUDED