X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Ftypes.h;h=c24f22090882b443d15618defc7fc0dd436630cb;hp=26de44e12ea5b9a726d7d449b998ce39728bab61;hb=ecd3218b6b24bb54509dbe6e9b24517b7df7390d;hpb=549b5c478f0f455186945033559c4affe8f940ed diff --git a/src/types.h b/src/types.h index 26de44e1..c24f2209 100644 --- a/src/types.h +++ b/src/types.h @@ -1,7 +1,8 @@ /* Stockfish, a UCI chess playing engine derived from Glaurung 2.1 Copyright (C) 2004-2008 Tord Romstad (Glaurung author) - Copyright (C) 2008-2013 Marco Costalba, Joona Kiiski, Tord Romstad + Copyright (C) 2008-2015 Marco Costalba, Joona Kiiski, Tord Romstad + Copyright (C) 2015-2017 Marco Costalba, Joona Kiiski, Gary Linscott, 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 @@ -20,57 +21,62 @@ #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. +/// +/// -DUSE_PEXT | Add runtime support for use of pext asm-instruction. Works +/// | only in 64-bit mode and requires hardware with pext support. #include #include #include +#include #include -#include "platform.h" - -#define unlikely(x) (x) // For code annotation purposes +#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' +#endif -#if defined(_WIN64) && !defined(IS_64BIT) -# include // MSVC popcnt and bsfq instrinsics +/// 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(_MSC_VER) // No Makefile used +# include // Microsoft header for _BitScanForward64() # define IS_64BIT -# define USE_BSFQ #endif -#if defined(USE_POPCNT) && defined(_MSC_VER) && defined(__INTEL_COMPILER) -# include // Intel header for _mm_popcnt_u64() intrinsic +#if defined(USE_POPCNT) && (defined(__INTEL_COMPILER) || defined(_MSC_VER)) +# include // Intel and Microsoft header for _mm_popcnt_u64() #endif -# if !defined(NO_PREFETCH) && (defined(__INTEL_COMPILER) || defined(_MSC_VER)) -# include // Intel and Microsoft header for _mm_prefetch() -# endif - -#define CACHE_LINE_SIZE 64 -#if defined(_MSC_VER) || defined(__INTEL_COMPILER) -# define CACHE_LINE_ALIGNMENT __declspec(align(CACHE_LINE_SIZE)) -#else -# define CACHE_LINE_ALIGNMENT __attribute__ ((aligned(CACHE_LINE_SIZE))) +#if !defined(NO_PREFETCH) && (defined(__INTEL_COMPILER) || defined(_MSC_VER)) +# include // Intel and Microsoft header for _mm_prefetch() #endif -#ifdef _MSC_VER -# define FORCE_INLINE __forceinline -#elif defined(__GNUC__) -# define FORCE_INLINE inline __attribute__((always_inline)) +#if defined(USE_PEXT) +# include // Header for _pext_u64() intrinsic +# define pext(b, m) _pext_u64(b, m) #else -# define FORCE_INLINE inline +# define pext(b, m) 0 #endif #ifdef USE_POPCNT @@ -79,6 +85,12 @@ const bool HasPopCnt = true; const bool HasPopCnt = false; #endif +#ifdef USE_PEXT +const bool HasPext = true; +#else +const bool HasPext = false; +#endif + #ifdef IS_64BIT const bool Is64Bit = true; #else @@ -88,22 +100,22 @@ const bool Is64Bit = false; typedef uint64_t Key; typedef uint64_t Bitboard; -const int MAX_MOVES = 256; -const int MAX_PLY = 100; -const int MAX_PLY_PLUS_6 = MAX_PLY + 6; +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 { +enum Move : int { MOVE_NONE, MOVE_NULL = 65 }; @@ -112,23 +124,31 @@ enum MoveType { NORMAL, PROMOTION = 1 << 14, ENPASSANT = 2 << 14, - CASTLE = 3 << 14 + CASTLING = 3 << 14 }; -enum CastleRight { // Defined as in PolyGlot book hash key - CASTLES_NONE, - WHITE_OO, - WHITE_OOO = WHITE_OO << 1, - BLACK_OO = WHITE_OO << 2, - BLACK_OOO = WHITE_OO << 3, - ALL_CASTLES = WHITE_OO | WHITE_OOO | BLACK_OO | BLACK_OOO, - 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 { @@ -138,10 +158,11 @@ enum Phase { }; 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 { @@ -151,25 +172,24 @@ enum Bound { BOUND_EXACT = BOUND_UPPER | BOUND_LOWER }; -enum Value { +enum Value : int { VALUE_ZERO = 0, VALUE_DRAW = 0, - VALUE_KNOWN_WIN = 15000, - VALUE_MATE = 30000, - VALUE_INFINITE = 30001, - VALUE_NONE = 30002, - - VALUE_MATE_IN_MAX_PLY = VALUE_MATE - MAX_PLY, - VALUE_MATED_IN_MAX_PLY = -VALUE_MATE + MAX_PLY, - - VALUE_ENSURE_INTEGER_SIZE_P = INT_MAX, - VALUE_ENSURE_INTEGER_SIZE_N = INT_MIN, - - PawnValueMg = 198, PawnValueEg = 258, - KnightValueMg = 817, KnightValueEg = 846, - BishopValueMg = 836, BishopValueEg = 857, - RookValueMg = 1270, RookValueEg = 1278, - QueenValueMg = 2521, QueenValueEg = 2558 + VALUE_KNOWN_WIN = 10000, + VALUE_MATE = 32000, + VALUE_INFINITE = 32001, + VALUE_NONE = 32002, + + VALUE_MATE_IN_MAX_PLY = VALUE_MATE - 2 * MAX_PLY, + VALUE_MATED_IN_MAX_PLY = -VALUE_MATE + 2 * MAX_PLY, + + PawnValueMg = 188, PawnValueEg = 248, + KnightValueMg = 764, KnightValueEg = 848, + BishopValueMg = 826, BishopValueEg = 891, + RookValueMg = 1282, RookValueEg = 1373, + QueenValueMg = 2526, QueenValueEg = 2646, + + MidgameLimit = 15258, EndgameLimit = 3915 }; enum PieceType { @@ -185,22 +205,23 @@ enum Piece { PIECE_NB = 16 }; -enum Color { - WHITE, BLACK, NO_COLOR, COLOR_NB = 2 -}; +extern Value PieceValue[PHASE_NB][PIECE_NB]; -enum Depth { +enum Depth : int { - 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_CHECKS = 0 * ONE_PLY, + DEPTH_QS_NO_CHECKS = -1 * ONE_PLY, DEPTH_QS_RECAPTURES = -5 * ONE_PLY, - DEPTH_NONE = -127 * ONE_PLY + DEPTH_NONE = -6 * ONE_PLY, + DEPTH_MAX = MAX_PLY * ONE_PLY }; +static_assert(!(ONE_PLY & (ONE_PLY - 1)), "ONE_PLY is not a power of 2"); + enum Square { SQ_A1, SQ_B1, SQ_C1, SQ_D1, SQ_E1, SQ_F1, SQ_G1, SQ_H1, SQ_A2, SQ_B2, SQ_C2, SQ_D2, SQ_E2, SQ_F2, SQ_G2, SQ_H2, @@ -214,90 +235,88 @@ enum Square { SQUARE_NB = 64, - DELTA_N = 8, - DELTA_E = 1, - DELTA_S = -8, - DELTA_W = -1, - - DELTA_NN = DELTA_N + DELTA_N, - DELTA_NE = DELTA_N + DELTA_E, - DELTA_SE = DELTA_S + DELTA_E, - DELTA_SS = DELTA_S + DELTA_S, - DELTA_SW = DELTA_S + DELTA_W, - DELTA_NW = DELTA_N + DELTA_W + NORTH = 8, + EAST = 1, + SOUTH = -NORTH, + WEST = -EAST, + + NORTH_EAST = NORTH + EAST, + SOUTH_EAST = SOUTH + EAST, + SOUTH_WEST = SOUTH + WEST, + NORTH_WEST = NORTH + WEST }; -enum File { +enum File : int { FILE_A, FILE_B, FILE_C, FILE_D, FILE_E, FILE_F, FILE_G, FILE_H, FILE_NB }; -enum Rank { +enum Rank : int { 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. -enum Score { - SCORE_ZERO, - SCORE_ENSURE_INTEGER_SIZE_P = INT_MAX, - SCORE_ENSURE_INTEGER_SIZE_N = INT_MIN -}; +/// Score enum stores a middlegame and an endgame value in a single integer +/// (enum). The least significant 16 bits are used to store the endgame value +/// and the upper 16 bits are used to store the middlegame value. Take some +/// care to avoid left-shifting a signed int to avoid undefined behavior. +enum Score : int { SCORE_ZERO }; -inline Score make_score(int mg, int eg) { return Score((mg << 16) + eg); } +inline Score make_score(int mg, int eg) { + return Score((int)((unsigned int)eg << 16) + mg); +} -/// 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 + 0x8000) & ~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) { -inline Value eg_value(Score s) { return Value(int16_t(s & 0xffff)); } + union { uint16_t u; int16_t s; } eg = { uint16_t(unsigned(s + 0x8000) >> 16) }; + return Value(eg.s); +} -#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)) }; + return Value(mg.s); } -#endif - -#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) { return d1 = d1 + d2; } \ -inline T& operator-=(T& d1, const T d2) { return d1 = d1 - d2; } \ -inline T& operator*=(T& d, int i) { return d = T(int(d) * i); } - -#define ENABLE_OPERATORS_ON(T) ENABLE_SAFE_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/(const T d, int i) { return T(int(d) / i); } \ +#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-(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; } \ + +#define ENABLE_FULL_OPERATORS_ON(T) \ +ENABLE_BASE_OPERATORS_ON(T) \ +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 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); } \ inline T& operator/=(T& d, int i) { return d = T(int(d) / i); } -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) +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) -/// Added operators for adding integers to a Value +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. @@ -308,30 +327,32 @@ inline Score operator/(Score s, int i) { return make_score(mg_value(s) / i, eg_value(s) / i); } -#undef ENABLE_OPERATORS_ON -#undef ENABLE_SAFE_OPERATORS_ON +/// Multiplication of a Score by an integer. We check for overflow in debug mode. +inline Score operator*(Score s, int i) { -extern Value PieceValue[PHASE_NB][PIECE_NB]; + Score result = Score(int(s) * i); -struct ExtMove { - Move move; - int score; -}; + assert(eg_value(result) == (i * eg_value(s))); + assert(mg_value(result) == (i * mg_value(s))); + assert((i == 0) || (result / i) == s ); -inline bool operator<(const ExtMove& f, const ExtMove& s) { - return f.score < s.score; + return result; } inline Color operator~(Color c) { - return Color(c ^ BLACK); + return Color(c ^ BLACK); // Toggle color } inline Square operator~(Square s) { return Square(s ^ SQ_A8); // Vertical flip SQ_A1 -> SQ_A8 } -inline Square operator|(File f, Rank r) { - return Square((r << 3) | f); +inline Piece operator~(Piece pc) { + return Piece(pc ^ 8); // Swap color of piece B_KNIGHT -> W_KNIGHT +} + +inline CastlingRight operator|(Color c, CastlingSide s) { + return CastlingRight(WHITE_OO << ((s == QUEEN_SIDE) + 2 * c)); } inline Value mate_in(int ply) { @@ -342,21 +363,21 @@ 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) { @@ -371,10 +392,6 @@ 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)); } @@ -392,16 +409,8 @@ inline bool opposite_colors(Square s1, Square s2) { return ((s >> 3) ^ s) & 1; } -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; + return c == WHITE ? NORTH : SOUTH; } inline Square from_sq(Move m) { @@ -412,32 +421,29 @@ inline Square to_sq(Move m) { return Square(m & 0x3F); } +inline int from_to(Move m) { + return m & 0xFFF; +} + inline MoveType type_of(Move m) { return MoveType(m & (3 << 14)); } inline PieceType promotion_type(Move m) { - return PieceType(((m >> 12) & 3) + 2); + return PieceType(((m >> 12) & 3) + KNIGHT); } inline Move make_move(Square from, Square to) { - return Move(to | (from << 6)); + return Move((from << 6) + to); } template inline Move make(Square from, Square to, PieceType pt = KNIGHT) { - return Move(to | (from << 6) | T | ((pt - KNIGHT) << 12)); + return Move(T + ((pt - KNIGHT) << 12) + (from << 6) + to); } 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 // #ifndef TYPES_H_INCLUDED