X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Ftypes.h;h=519f6af87f28f61c81bf232e79074d74eabee424;hp=f74ba8d52fedd04b798c9528141e5420456e61cb;hb=40b1b2717827b5516c7d3978bdc341e801a650e7;hpb=c9e396b5424802b80e80394979ca84688b523244 diff --git a/src/types.h b/src/types.h index f74ba8d5..519f6af8 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) 2008-2014 Marco Costalba, Joona Kiiski, Tord Romstad + Copyright (C) 2008-2015 Marco Costalba, Joona Kiiski, Tord Romstad + Copyright (C) 2015-2016 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 @@ -20,63 +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. Always use this. +/// -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(_WIN64) && !defined(IS_64BIT) -# include // MSVC popcnt and bsfq instrinsics -# define IS_64BIT -# define USE_BSFQ +#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(USE_POPCNT) && defined(_MSC_VER) && defined(__INTEL_COMPILER) -# include // Intel header for _mm_popcnt_u64() intrinsic +/// 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 #endif -#if defined(USE_PEXT) -# include // Header for _pext_u64() intrinsic -#else -# define _pext_u64(b, m) (0) +#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 @@ -100,9 +100,8 @@ const bool Is64Bit = false; typedef uint64_t Key; typedef uint64_t Bitboard; -const int MAX_MOVES = 256; -const int MAX_PLY = 120; -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 /// @@ -116,7 +115,7 @@ const int MAX_PLY_PLUS_6 = MAX_PLY + 6; /// 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 }; @@ -136,12 +135,12 @@ enum CastlingSide { KING_SIDE, QUEEN_SIDE, CASTLING_SIDE_NB = 2 }; -enum CastlingRight { // Defined as in PolyGlot book hash key +enum CastlingRight { NO_CASTLING, WHITE_OO, - WHITE_OOO = WHITE_OO << 1, - BLACK_OO = WHITE_OO << 2, - BLACK_OOO = WHITE_OO << 3, + 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 }; @@ -173,7 +172,7 @@ enum Bound { BOUND_EXACT = BOUND_UPPER | BOUND_LOWER }; -enum Value { +enum Value : int { VALUE_ZERO = 0, VALUE_DRAW = 0, VALUE_KNOWN_WIN = 10000, @@ -181,19 +180,16 @@ enum Value { 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_ENSURE_INTEGER_SIZE_P = INT_MAX, - VALUE_ENSURE_INTEGER_SIZE_N = INT_MIN, + VALUE_MATE_IN_MAX_PLY = VALUE_MATE - 2 * MAX_PLY, + VALUE_MATED_IN_MAX_PLY = -VALUE_MATE + 2 * MAX_PLY, - PawnValueMg = 198, PawnValueEg = 258, - KnightValueMg = 817, KnightValueEg = 846, - BishopValueMg = 836, BishopValueEg = 857, - RookValueMg = 1270, RookValueEg = 1278, - QueenValueMg = 2521, QueenValueEg = 2558, + PawnValueMg = 188, PawnValueEg = 248, + KnightValueMg = 753, KnightValueEg = 832, + BishopValueMg = 826, BishopValueEg = 897, + RookValueMg = 1285, RookValueEg = 1371, + QueenValueMg = 2513, QueenValueEg = 2650, - MidgameLimit = 15581, EndgameLimit = 3998 + MidgameLimit = 15258, EndgameLimit = 3915 }; enum PieceType { @@ -209,18 +205,25 @@ enum Piece { PIECE_NB = 16 }; +const Piece Pieces[] = { W_PAWN, W_KNIGHT, W_BISHOP, W_ROOK, W_QUEEN, W_KING, + B_PAWN, B_KNIGHT, B_BISHOP, B_ROOK, B_QUEEN, B_KING }; +extern Value PieceValue[PHASE_NB][PIECE_NB]; + enum Depth { - ONE_PLY = 2, + ONE_PLY = 1, DEPTH_ZERO = 0 * 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, @@ -234,78 +237,67 @@ 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 = -8, + WEST = -1, + + 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 }; -/// The Score enum stores a middlegame and an endgame value in a single integer +/// 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. 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, - SCORE_ENSURE_INTEGER_SIZE_P = INT_MAX, - SCORE_ENSURE_INTEGER_SIZE_N = INT_MIN -}; +/// 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 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. Therefore, in this case we use faster code that, although not 100% -/// standard compliant, 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_BASE_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; } \ +#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); } -ENABLE_BASE_OPERATORS_ON(Score) - -#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/(const T d, int i) { return 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) @@ -317,6 +309,8 @@ 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 @@ -335,25 +329,18 @@ inline Score operator/(Score s, int i) { return make_score(mg_value(s) / i, eg_value(s) / i); } -extern Value PieceValue[PHASE_NB][PIECE_NB]; - -struct ExtMove { - Move move; - Value value; -}; - -inline bool operator<(const ExtMove& f, const ExtMove& s) { - return f.value < s.value; -} - 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 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)); } @@ -367,14 +354,14 @@ inline Value mated_in(int ply) { } inline Square make_square(File f, Rank r) { - return Square((r << 3) | f); + return Square((r << 3) + f); } inline Piece make_piece(Color c, PieceType pt) { - return Piece((c << 3) | pt); + return Piece((c << 3) + pt); } -inline PieceType type_of(Piece pc) { +inline PieceType type_of(Piece pc) { return PieceType(pc & 7); } @@ -412,16 +399,8 @@ inline bool opposite_colors(Square s1, Square s2) { return ((s >> 3) ^ s) & 1; } -inline char to_char(File f, bool tolower = true) { - return char(f - FILE_A + (tolower ? 'a' : 'A')); -} - -inline char 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) { @@ -437,27 +416,20 @@ inline MoveType type_of(Move m) { } 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 to_string(Square s) { - char ch[] = { to_char(file_of(s)), 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