Use self-describing constants instead of numbers

[stockfish] / src / types.h

diff --git a/src/types.h b/src/types.h
index d67b2eea63a411bcda7fccfdc55ec26b2438ea97..75dff4b8030155d57ed49cdd9af4b62cad60ee8d 100644 (file)
--- a/src/types.h
+++ b/src/types.h
@@ -41,7 +41,7 @@
 
 #include "platform.h"
 
-#if defined(_WIN64)
+#if defined(_WIN64) && !defined(IS_64BIT)
 #  include <intrin.h> // MSVC popcnt and bsfq instrinsics
 #  define IS_64BIT
 #  define USE_BSFQ
@@ -51,6 +51,10 @@
 #  include <nmmintrin.h> // Intel header for _mm_popcnt_u64() intrinsic
 #endif
 
+#  if !defined(NO_PREFETCH) && (defined(__INTEL_COMPILER) || defined(_MSC_VER))
+#   include <xmmintrin.h> // Intel and Microsoft header for _mm_prefetch()
+#  endif
+
 #if defined(_MSC_VER) || defined(__INTEL_COMPILER)
 #  define CACHE_LINE_ALIGNMENT __declspec(align(64))
 #else
@@ -132,12 +136,19 @@ enum CastleRight {  // Defined as in PolyGlot book hash key
   WHITE_OOO    = 2,
   BLACK_OO     = 4,
   BLACK_OOO    = 8,
-  ALL_CASTLES  = 15
+  ALL_CASTLES  = 15,
+  CASTLE_RIGHT_NB = 16
 };
 
 enum CastlingSide {
   KING_SIDE,
-  QUEEN_SIDE
+  QUEEN_SIDE,
+  CASTLING_SIDE_NB = 2
+};
+
+enum Phase {
+  PHASE_ENDGAME = 0,
+  PHASE_MIDGAME = 128
 };
 
 enum ScaleFactor {
@@ -168,31 +179,30 @@ enum Value {
   VALUE_ENSURE_INTEGER_SIZE_P = INT_MAX,
   VALUE_ENSURE_INTEGER_SIZE_N = INT_MIN,
 
-  PawnValueMidgame   = 198,
-  PawnValueEndgame   = 258,
-  KnightValueMidgame = 817,
-  KnightValueEndgame = 846,
-  BishopValueMidgame = 836,
-  BishopValueEndgame = 857,
-  RookValueMidgame   = 1270,
-  RookValueEndgame   = 1278,
-  QueenValueMidgame  = 2521,
-  QueenValueEndgame  = 2558
+  Mg = 0, Eg = 1,
+
+  PawnValueMg   = 198,   PawnValueEg   = 258,
+  KnightValueMg = 817,   KnightValueEg = 846,
+  BishopValueMg = 836,   BishopValueEg = 857,
+  RookValueMg   = 1270,  RookValueEg   = 1278,
+  QueenValueMg  = 2521,  QueenValueEg  = 2558
 };
 
 enum PieceType {
   NO_PIECE_TYPE = 0, ALL_PIECES = 0,
-  PAWN = 1, KNIGHT = 2, BISHOP = 3, ROOK = 4, QUEEN = 5, KING = 6
+  PAWN = 1, KNIGHT = 2, BISHOP = 3, ROOK = 4, QUEEN = 5, KING = 6,
+  PIECE_TYPE_NB = 8
 };
 
 enum Piece {
   NO_PIECE = 16, // color_of(NO_PIECE) == NO_COLOR
   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
+  B_PAWN = 9, B_KNIGHT = 10, B_BISHOP = 11, B_ROOK = 12, B_QUEEN = 13, B_KING = 14,
+  PIECE_NB = 16
 };
 
 enum Color {
-  WHITE, BLACK, NO_COLOR
+  WHITE, BLACK, NO_COLOR, COLOR_NB = 2
 };
 
 enum Depth {
@@ -218,6 +228,8 @@ enum Square {
   SQ_A8, SQ_B8, SQ_C8, SQ_D8, SQ_E8, SQ_F8, SQ_G8, SQ_H8,
   SQ_NONE,
 
+  SQUARE_NB = 64,
+
   DELTA_N =  8,
   DELTA_E =  1,
   DELTA_S = -8,
@@ -232,11 +244,11 @@ enum Square {
 };
 
 enum File {
-  FILE_A, FILE_B, FILE_C, FILE_D, FILE_E, FILE_F, FILE_G, FILE_H
+  FILE_A, FILE_B, FILE_C, FILE_D, FILE_E, FILE_F, FILE_G, FILE_H, FILE_NB = 8
 };
 
 enum Rank {
-  RANK_1, RANK_2, RANK_3, RANK_4, RANK_5, RANK_6, RANK_7, RANK_8
+  RANK_1, RANK_2, RANK_3, RANK_4, RANK_5, RANK_6, RANK_7, RANK_8, RANK_NB = 8
 };
 
 
@@ -323,19 +335,20 @@ inline Score apply_weight(Score v, Score w) {
 
 namespace Zobrist {
 
-  extern Key psq[2][8][64]; // [color][pieceType][square]/[piece count]
-  extern Key enpassant[8];  // [file]
-  extern Key castle[16];    // [castleRight]
+  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();
 }
 
-extern Score pieceSquareTable[16][64];
-extern int SquareDistance[64][64];
-extern const Value PieceValueMidgame[17]; // Indexed by Piece or PieceType
-extern const Value PieceValueEndgame[17];
+CACHE_LINE_ALIGNMENT
+
+extern Score pieceSquareTable[PIECE_NB][SQUARE_NB];
+extern Value PieceValue[2][18]; // [Mg / Eg][piece / pieceType]
+extern int SquareDistance[SQUARE_NB][SQUARE_NB];
 
 struct MoveStack {
   Move move;