X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fbitboard.cpp;h=41ce2955c147f27b2960130d0c2ec2ffa8c7d5f7;hp=36d582d3a6a2ebec48639658a20241f6efb11786;hb=6e00aa6bae8a9634b3aea4b7b0bde652a588e9de;hpb=76622342ec45a372b75bffdf81297861af78bbde diff --git a/src/bitboard.cpp b/src/bitboard.cpp index 36d582d3..41ce2955 100644 --- a/src/bitboard.cpp +++ b/src/bitboard.cpp @@ -68,24 +68,6 @@ namespace { Bitboard masks[], unsigned shifts[], Square deltas[], Fn index); } - -/// print_bitboard() prints a bitboard in an easily readable format to the -/// standard output. This is sometimes useful for debugging. - -void print_bitboard(Bitboard b) { - - for (Rank r = RANK_8; r >= RANK_1; r--) - { - std::cout << "+---+---+---+---+---+---+---+---+" << '\n'; - for (File f = FILE_A; f <= FILE_H; f++) - std::cout << "| " << ((b & make_square(f, r)) ? "X " : " "); - - std::cout << "|\n"; - } - std::cout << "+---+---+---+---+---+---+---+---+" << std::endl; -} - - /// first_1() finds the least significant nonzero bit in a nonzero bitboard. /// pop_1st_bit() finds and clears the least significant nonzero bit in a /// nonzero bitboard. @@ -166,10 +148,29 @@ Square last_1(Bitboard b) { #endif // !defined(USE_BSFQ) -/// bitboards_init() initializes various bitboard arrays. It is called during + +/// Bitboards::print() prints a bitboard in an easily readable format to the +/// standard output. This is sometimes useful for debugging. + +void Bitboards::print(Bitboard b) { + + for (Rank rank = RANK_8; rank >= RANK_1; rank--) + { + std::cout << "+---+---+---+---+---+---+---+---+" << '\n'; + + for (File file = FILE_A; file <= FILE_H; file++) + std::cout << "| " << ((b & make_square(file, rank)) ? "X " : " "); + + std::cout << "|\n"; + } + std::cout << "+---+---+---+---+---+---+---+---+" << std::endl; +} + + +/// Bitboards::init() initializes various bitboard arrays. It is called during /// program initialization. -void bitboards_init() { +void Bitboards::init() { for (int k = 0, i = 0; i < 8; i++) while (k < (2 << i)) @@ -235,7 +236,7 @@ void bitboards_init() { { Square to = s + Square(c == WHITE ? steps[pt][k] : -steps[pt][k]); - if (square_is_ok(to) && square_distance(s, to) < 3) + if (is_ok(to) && square_distance(s, to) < 3) StepAttacksBB[make_piece(c, pt)][s] |= to; } @@ -272,7 +273,7 @@ namespace { for (int i = 0; i < 4; i++) for (Square s = sq + deltas[i]; - square_is_ok(s) && square_distance(s, s - deltas[i]) == 1; + is_ok(s) && square_distance(s, s - deltas[i]) == 1; s += deltas[i]) { attack |= s;