Don't need to expose namespace Zobrist

[stockfish] / src / types.h

diff --git a/src/types.h b/src/types.h
index 75dff4b8030155d57ed49cdd9af4b62cad60ee8d..ade9a620a47d5d70e63a71887f8310403a6f7c69 100644 (file)
--- 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) 2008-2013 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
@@ -35,6 +35,7 @@
 ///               | only in 64-bit mode. For compiling requires hardware with
 ///               | popcnt support.
 
+#include <cassert>
 #include <cctype>
 #include <climits>
 #include <cstdlib>
@@ -55,10 +56,11 @@
 #   include <xmmintrin.h> // 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(64))
+#  define CACHE_LINE_ALIGNMENT __declspec(align(CACHE_LINE_SIZE))
 #else
-#  define CACHE_LINE_ALIGNMENT  __attribute__ ((aligned(64)))
+#  define CACHE_LINE_ALIGNMENT  __attribute__ ((aligned(CACHE_LINE_SIZE)))
 #endif
 
 #if defined(_MSC_VER)
@@ -148,7 +150,8 @@ enum CastlingSide {
 
 enum Phase {
   PHASE_ENDGAME = 0,
-  PHASE_MIDGAME = 128
+  PHASE_MIDGAME = 128,
+  MG = 0, EG = 1, PHASE_NB = 2
 };
 
 enum ScaleFactor {
@@ -179,8 +182,6 @@ enum Value {
   VALUE_ENSURE_INTEGER_SIZE_P = INT_MAX,
   VALUE_ENSURE_INTEGER_SIZE_N = INT_MIN,
 
-  Mg = 0, Eg = 1,
-
   PawnValueMg   = 198,   PawnValueEg   = 258,
   KnightValueMg = 817,   KnightValueEg = 846,
   BishopValueMg = 836,   BishopValueEg = 857,
@@ -195,7 +196,7 @@ enum PieceType {
 };
 
 enum Piece {
-  NO_PIECE = 16, // color_of(NO_PIECE) == NO_COLOR
+  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,
   PIECE_NB = 16
@@ -212,7 +213,7 @@ enum Depth {
   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_QS_RECAPTURES = -7 * ONE_PLY,
 
   DEPTH_NONE = -127 * ONE_PLY
 };
@@ -267,7 +268,7 @@ 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
 /// 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); }
+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
@@ -324,30 +325,10 @@ 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[2][18]; // [Mg / Eg][piece / pieceType]
+extern Value PieceValue[PHASE_NB][PIECE_NB];
 extern int SquareDistance[SQUARE_NB][SQUARE_NB];
 
 struct MoveStack {
@@ -392,6 +373,7 @@ inline PieceType type_of(Piece p)  {
 }
 
 inline Color color_of(Piece p) {
+  assert(p != NO_PIECE);
   return Color(p >> 3);
 }
 
@@ -440,12 +422,12 @@ inline int square_distance(Square s1, Square s2) {
   return SquareDistance[s1][s2];
 }
 
-inline char file_to_char(File f) {
-  return char(f - FILE_A + int('a'));
+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 + int('1'));
+  return char(r - RANK_1 + '1');
 }
 
 inline Square pawn_push(Color c) {
@@ -474,7 +456,7 @@ inline Move make_move(Square from, Square to) {
 
 template<MoveType T>
 inline Move make(Square from, Square to, PieceType pt = KNIGHT) {
-  return Move(to | (from << 6) | T | ((pt - KNIGHT) << 12)) ;
+  return Move(to | (from << 6) | T | ((pt - KNIGHT) << 12));
 }
 
 inline bool is_ok(Move m) {
@@ -488,21 +470,4 @@ inline const std::string square_to_string(Square s) {
   return ch;
 }
 
-/// Our insertion sort implementation, works with pointers and iterators and is
-/// guaranteed to be stable, as is needed.
-template<typename T, typename K>
-void sort(K first, K last)
-{
-  T tmp;
-  K p, q;
-
-  for (p = first + 1; p < last; p++)
-  {
-      tmp = *p;
-      for (q = p; q != first && *(q-1) < tmp; --q)
-          *q = *(q-1);
-      *q = tmp;
-  }
-}
-
 #endif // !defined(TYPES_H_INCLUDED)