X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fdepth.h;h=96b9197cfb99d508399a05f459ab20e22519a655;hp=493ecc408fba1ced98c058e75bfeddee6c7967cf;hb=cfb52fcd5d307fc0daf6045fc7e299b61fed1017;hpb=bb751d6c890f5c50c642366d601740366cfae8d0

diff --git a/src/depth.h b/src/depth.h
index 493ecc40..96b9197c 100644
--- a/src/depth.h
+++ b/src/depth.h
@@ -1,17 +1,18 @@
 /*
-  Glaurung, a UCI chess playing engine.
-  Copyright (C) 2004-2008 Tord Romstad
+  Stockfish, a UCI chess playing engine derived from Glaurung 2.1
+  Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
+  Copyright (C) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad
 
-  Glaurung is free software: you can redistribute it and/or modify
+  Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
-  
-  Glaurung is distributed in the hope that it will be useful,
+
+  Stockfish is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
-  
+
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
@@ -25,19 +26,10 @@
 ////
 
 enum Depth {
-  DEPTH_ZERO = 0,
-  DEPTH_MAX = 200  // 100 * OnePly;
-};
 
-
-////
-//// Constants
-////
-
-/// Note: If OnePly is changed, the constant HistoryMax in history.h should
-/// probably also be changed.
-
-const Depth OnePly = Depth(2);
+  OnePly = 2,
+  DEPTH_NONE = -127 * OnePly
+};
 
 
 ////
@@ -50,7 +42,8 @@ inline void operator+= (Depth &d, int i) { d = Depth(int(d) + i); }
 inline void operator+= (Depth &d1, Depth d2) { d1 += int(d2); }
 inline Depth operator- (Depth d, int i) { return Depth(int(d) - i); }
 inline Depth operator- (Depth d1, Depth d2) { return Depth(int(d1) - int(d2)); }
-inline void operator-= (Depth & d, int i) { d = Depth(int(d) - i); }
+inline void operator-= (Depth &d, int i) { d = Depth(int(d) - i); }
+inline void operator-= (Depth &d1, Depth d2) { d1 -= int(d2); }
 inline Depth operator* (Depth d, int i) { return Depth(int(d) * i); }
 inline Depth operator* (int i, Depth d) { return Depth(int(d) * i); }
 inline void operator*= (Depth &d, int i) { d = Depth(int(d) * i); }