src/depth.h

   1 /*
   2   Glaurung, a UCI chess playing engine.
   3   Copyright (C) 2004-2008 Tord Romstad
   4
   5   Glaurung is free software: you can redistribute it and/or modify
   6   it under the terms of the GNU General Public License as published by
   7   the Free Software Foundation, either version 3 of the License, or
   8   (at your option) any later version.
   9
  10   Glaurung is distributed in the hope that it will be useful,
  11   but WITHOUT ANY WARRANTY; without even the implied warranty of
  12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13   GNU General Public License for more details.
  14
  15   You should have received a copy of the GNU General Public License
  16   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19
  20 #if !defined(DEPTH_H_INCLUDED)
  21 #define DEPTH_H_INCLUDED
  22
  23 ////
  24 //// Types
  25 ////
  26
  27 enum Depth {
  28   DEPTH_ZERO = 0,
  29   DEPTH_MAX = 200  // 100 * OnePly;
  30 };
  31
  32
  33 ////
  34 //// Constants
  35 ////
  36
  37 /// Note: If OnePly is changed, the constant HistoryMax in history.h should
  38 /// probably also be changed.
  39
  40 const Depth OnePly = Depth(2);
  41
  42
  43 ////
  44 //// Inline functions
  45 ////
  46
  47 inline Depth operator+ (Depth d, int i) { return Depth(int(d) + i); }
  48 inline Depth operator+ (Depth d1, Depth d2) { return Depth(int(d1) + int(d2)); }
  49 inline void operator+= (Depth &d, int i) { d = Depth(int(d) + i); }
  50 inline void operator+= (Depth &d1, Depth d2) { d1 += int(d2); }
  51 inline Depth operator- (Depth d, int i) { return Depth(int(d) - i); }
  52 inline Depth operator- (Depth d1, Depth d2) { return Depth(int(d1) - int(d2)); }
  53 inline void operator-= (Depth & d, int i) { d = Depth(int(d) - i); }
  54 inline Depth operator* (Depth d, int i) { return Depth(int(d) * i); }
  55 inline Depth operator* (int i, Depth d) { return Depth(int(d) * i); }
  56 inline void operator*= (Depth &d, int i) { d = Depth(int(d) * i); }
  57 inline Depth operator/ (Depth d, int i) { return Depth(int(d) / i); }
  58 inline void operator/= (Depth &d, int i) { d = Depth(int(d) / i); }
  59
  60
  61 #endif // !defined(DEPTH_H_INCLUDED)