X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fbitboard.h;h=a899d879818f5792be5d52f3714879872ba69270;hp=afeb40ec146f2af01d2626111fe19450148c90f3;hb=5ccff25df2e8fcbee3d4c1428bbc101afa88e700;hpb=4006f2c9132db034a27a94be33070d6aaab75b24 diff --git a/src/bitboard.h b/src/bitboard.h index afeb40ec..a899d879 100644 --- a/src/bitboard.h +++ b/src/bitboard.h @@ -1,8 +1,6 @@ /* Stockfish, a UCI chess playing engine derived from Glaurung 2.1 - Copyright (C) 2004-2008 Tord Romstad (Glaurung author) - Copyright (C) 2008-2015 Marco Costalba, Joona Kiiski, Tord Romstad - Copyright (C) 2015-2020 Marco Costalba, Joona Kiiski, Gary Linscott, Tord Romstad + Copyright (C) 2004-2020 The Stockfish developers (see AUTHORS file) Stockfish is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -130,6 +128,7 @@ constexpr bool more_than_one(Bitboard b) { return b & (b - 1); } + constexpr bool opposite_colors(Square s1, Square s2) { return (s1 + rank_of(s1) + s2 + rank_of(s2)) & 1; }