Retire linear imbalance

[stockfish] / src / types.h

diff --git a/src/types.h b/src/types.h
index 772f0ec92fd0a6d3c8cee93ac9b9470468878ec0..d669d812e3ed8619c9e3e710ea42495b013161be 100644 (file)
--- a/src/types.h
+++ b/src/types.h
@@ -2,6 +2,7 @@
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
   Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
   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
@@ -59,13 +60,12 @@
 /// _WIN64             Building on Windows 64 bit
 
 #if defined(_WIN64) && defined(_MSC_VER) // No Makefile used
-#  include <intrin.h> // MSVC popcnt and bsfq instrinsics
+#  include <intrin.h> // Microsoft header for _BitScanForward64()
 #  define IS_64BIT
-#  define USE_BSFQ
 #endif
 
-#if defined(USE_POPCNT) && defined(__INTEL_COMPILER) && defined(_MSC_VER)
-#  include <nmmintrin.h> // Intel header for _mm_popcnt_u64() intrinsic
+#if defined(USE_POPCNT) && (defined(__INTEL_COMPILER) || defined(_MSC_VER))
+#  include <nmmintrin.h> // Intel and Microsoft header for _mm_popcnt_u64()
 #endif
 
 #if !defined(NO_PREFETCH) && (defined(__INTEL_COMPILER) || defined(_MSC_VER))
@@ -183,13 +183,13 @@ enum Value : int {
   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   = 1281,
-  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 {
@@ -209,15 +209,17 @@ enum Depth {
 
   ONE_PLY = 1,
 
-  DEPTH_ZERO          =  0,
-  DEPTH_QS_CHECKS     =  0,
-  DEPTH_QS_NO_CHECKS  = -1,
-  DEPTH_QS_RECAPTURES = -5,
+  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 = -6,
-  DEPTH_MAX  = MAX_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,
@@ -354,7 +356,7 @@ inline Piece make_piece(Color c, PieceType pt) {
   return Piece((c << 3) | pt);
 }
 
-inline PieceType type_of(Piece pc)  {
+inline PieceType type_of(Piece pc) {
   return PieceType(pc & 7);
 }