X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fdepth.h;h=96b9197cfb99d508399a05f459ab20e22519a655;hp=2e8e21799d38763d02c1383068ce197aff0d9405;hb=cfb52fcd5d307fc0daf6045fc7e299b61fed1017;hpb=b98bcf858ba0cac58d52b76eb1bea40e25adcaa1

diff --git a/src/depth.h b/src/depth.h
index 2e8e2179..96b9197c 100644
--- a/src/depth.h
+++ b/src/depth.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) 2008-2009 Marco Costalba
+  Copyright (C) 2008-2010 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
@@ -26,16 +26,10 @@
 ////
 
 enum Depth {
-  DEPTH_ZERO = 0,
-  DEPTH_MAX = 200  // 100 * OnePly;
-};
-
-
-////
-//// Constants
-////
 
-const Depth OnePly = Depth(2);
+  OnePly = 2,
+  DEPTH_NONE = -127 * OnePly
+};
 
 
 ////
@@ -48,7 +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); }