Use FMHs to assist with LMR formula.

[stockfish] / src / movegen.cpp

diff --git a/src/movegen.cpp b/src/movegen.cpp
index 111895876459d0b9b67921ae305a57bc13b70748..3622f18e84217b14b56a506bf4bdf2d91fc0754e 100644 (file)
--- a/src/movegen.cpp
+++ b/src/movegen.cpp
@@ -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
@@ -58,10 +59,11 @@ namespace {
 
     if (Checks && !pos.gives_check(m, *ci))
         return moveList;
+    else
+        (void)ci; // Silence a warning under MSVC
 
     *moveList++ = m;
-
-    return (void)ci, moveList; // Silence a warning under MSVC
+    return moveList;
   }
 
 
@@ -82,8 +84,10 @@ namespace {
     // that's not already included in the queen promotion.
     if (Type == QUIET_CHECKS && (StepAttacksBB[W_KNIGHT][to] & ci->ksq))
         *moveList++ = make<PROMOTION>(to - Delta, to, KNIGHT);
+    else
+        (void)ci; // Silence a warning under MSVC
 
-    return (void)ci, moveList; // Silence a warning under MSVC
+    return moveList;
   }
 
 
@@ -235,7 +239,7 @@ namespace {
                 && !(PseudoAttacks[Pt][from] & target & ci->checkSquares[Pt]))
                 continue;
 
-            if (ci->dcCandidates && (ci->dcCandidates & from))
+            if (ci->dcCandidates & from)
                 continue;
         }