X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fbitboard.cpp;h=57b24e2ef61b88ce5a4785b368df05739ffbbd44;hp=d9a9daba8b854d4ebdcdb2c3701ff2e38cdb386d;hb=6482ce2bb2cb2c2450008afb58c7ef2e04d56841;hpb=ad4739a6d45d9d37afe2414f432a07190fae9b83 diff --git a/src/bitboard.cpp b/src/bitboard.cpp index d9a9daba..57b24e2e 100644 --- a/src/bitboard.cpp +++ b/src/bitboard.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 @@ -154,7 +154,7 @@ Square pop_1st_bit(Bitboard* bb) { void bitboards_init() { for (Bitboard b = 0; b < 256; b++) - BitCount8Bit[b] = (uint8_t)count_1s(b); + BitCount8Bit[b] = (uint8_t)popcount(b); for (Square s = SQ_A1; s <= SQ_H8; s++) { @@ -198,12 +198,12 @@ void bitboards_init() { SquareDistance[s1][s2] = std::max(file_distance(s1, s2), rank_distance(s1, s2)); for (int i = 0; i < 64; i++) - if (!CpuIs64Bit) // Matt Taylor's folding trick for 32 bit systems + if (!Is64Bit) // Matt Taylor's folding trick for 32 bit systems { Bitboard b = 1ULL << i; b ^= b - 1; b ^= b >> 32; - BSFTable[uint32_t(b * 0x783A9B23) >> 26] = i; + BSFTable[(uint32_t)(b * 0x783A9B23) >> 26] = i; } else BSFTable[((1ULL << i) * 0x218A392CD3D5DBFULL) >> 58] = i; @@ -321,7 +321,7 @@ namespace { // the number of 1s of the mask. Hence we deduce the size of the shift to // apply to the 64 or 32 bits word to get the index. masks[s] = sliding_attacks(pt, s, 0) & ~edges; - shifts[s] = (CpuIs64Bit ? 64 : 32) - count_1s(masks[s]); + shifts[s] = (Is64Bit ? 64 : 32) - popcount(masks[s]); // Use Carry-Rippler trick to enumerate all subsets of masks[s] and // store the corresponding sliding attacks bitboard in reference[]. @@ -337,7 +337,7 @@ namespace { if (s < SQ_H8) attacks[s + 1] = attacks[s] + size; - booster = MagicBoosters[CpuIs64Bit][rank_of(s)]; + booster = MagicBoosters[Is64Bit][rank_of(s)]; // Find a magic for square 's' picking up an (almost) random number // until we find the one that passes the verification test.