X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fmaterial.cpp;h=e2c64ff76e40006e9f93b4fb0c31c013c5e955dd;hp=27a88f86e67527c5d8851af6d4af9fb5583183cd;hb=553655eb073cdd59c726dd77fcf368d499029467;hpb=14df99130f53a2a5f57260eb830b4c0029bd4e99 diff --git a/src/material.cpp b/src/material.cpp index 27a88f86..e2c64ff7 100644 --- a/src/material.cpp +++ b/src/material.cpp @@ -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) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad + Copyright (C) 2008-2012 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 @@ -84,21 +84,15 @@ namespace { } // namespace -/// MaterialInfoTable c'tor and d'tor allocate and free the space for Endgames - -void MaterialInfoTable::init() { Base::init(); if (!funcs) funcs = new Endgames(); } -MaterialInfoTable::~MaterialInfoTable() { delete funcs; } - - -/// MaterialInfoTable::get_material_info() takes a position object as input, +/// MaterialInfoTable::material_info() takes a position object as input, /// computes or looks up a MaterialInfo object, and returns a pointer to it. /// If the material configuration is not already present in the table, it /// is stored there, so we don't have to recompute everything when the /// same material configuration occurs again. -MaterialInfo* MaterialInfoTable::get_material_info(const Position& pos) const { +MaterialInfo* MaterialInfoTable::material_info(const Position& pos) const { - Key key = pos.get_material_key(); + Key key = pos.material_key(); MaterialInfo* mi = probe(key); // If mi->key matches the position's material hash key, it means that we @@ -203,13 +197,13 @@ MaterialInfo* MaterialInfoTable::get_material_info(const Position& pos) const { // No pawns makes it difficult to win, even with a material advantage if (pos.piece_count(WHITE, PAWN) == 0 && npm_w - npm_b <= BishopValueMidgame) { - mi->factor[WHITE] = uint8_t + mi->factor[WHITE] = (uint8_t) (npm_w == npm_b || npm_w < RookValueMidgame ? 0 : NoPawnsSF[std::min(pos.piece_count(WHITE, BISHOP), 2)]); } if (pos.piece_count(BLACK, PAWN) == 0 && npm_b - npm_w <= BishopValueMidgame) { - mi->factor[BLACK] = uint8_t + mi->factor[BLACK] = (uint8_t) (npm_w == npm_b || npm_b < RookValueMidgame ? 0 : NoPawnsSF[std::min(pos.piece_count(BLACK, BISHOP), 2)]); } @@ -231,7 +225,7 @@ MaterialInfo* MaterialInfoTable::get_material_info(const Position& pos) const { { pos.piece_count(BLACK, BISHOP) > 1, pos.piece_count(BLACK, PAWN), pos.piece_count(BLACK, KNIGHT), pos.piece_count(BLACK, BISHOP) , pos.piece_count(BLACK, ROOK), pos.piece_count(BLACK, QUEEN) } }; - mi->value = int16_t((imbalance(pieceCount) - imbalance(pieceCount)) / 16); + mi->value = (int16_t)((imbalance(pieceCount) - imbalance(pieceCount)) / 16); return mi; } @@ -254,7 +248,7 @@ int MaterialInfoTable::imbalance(const int pieceCount[][8]) { + RedundantQueenPenalty * pieceCount[Us][QUEEN]; // Second-degree polynomial material imbalance by Tord Romstad - for (pt1 = PIECE_TYPE_NONE; pt1 <= QUEEN; pt1++) + for (pt1 = NO_PIECE_TYPE; pt1 <= QUEEN; pt1++) { pc = pieceCount[Us][pt1]; if (!pc) @@ -262,7 +256,7 @@ int MaterialInfoTable::imbalance(const int pieceCount[][8]) { v = LinearCoefficients[pt1]; - for (pt2 = PIECE_TYPE_NONE; pt2 <= pt1; pt2++) + for (pt2 = NO_PIECE_TYPE; pt2 <= pt1; pt2++) v += QuadraticCoefficientsSameColor[pt1][pt2] * pieceCount[Us][pt2] + QuadraticCoefficientsOppositeColor[pt1][pt2] * pieceCount[Them][pt2];