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  1. /*
  2.     Texel - A UCI chess engine.
  3.     Copyright (C) 2012-2013  Peter Österlund, peterosterlund2@gmail.com
  4.  
  5.     This program 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.     This program 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.  * history.cpp
  21.  *
  22.  *  Created on: Feb 25, 2012
  23.  *      Author: petero
  24.  */
  25.  
  26. #include "history.hpp"
  27.  
  28. int History::depthTable[] = {
  29.     0, 1, 6, 19, 42, 56
  30. };
  31.  
  32. void
  33. History::init() {
  34.     for (int p = 0; p < Piece::nPieceTypes; p++) {
  35.         for (int sq = 0; sq < 64; sq++) {
  36.             Entry& e = ht[p][sq];
  37.             e.countSuccess = 0;
  38.             e.countFail = 0;
  39.             e.score = -1;
  40.         }
  41.     }
  42. }
  43.  
  44. void
  45. History::reScale() {
  46.     for (int p = 0; p < Piece::nPieceTypes; p++) {
  47.         for (int sq = 0; sq < 64; sq++) {
  48.             Entry& e = ht[p][sq];
  49.             e.countSuccess = e.countSuccess / 4;
  50.             e.countFail = e.countFail / 4;
  51.         }
  52.     }
  53. }
  54.