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Bitwise operator overloads between Bitboard and Square

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Yes, we try to be fancy here ;-)

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2012-01-29 09:54:17 +01:00
parent 875a8079bc
commit a492a9dd07
9 changed files with 98 additions and 112 deletions
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12
src/bitboard.cpp
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@@ -77,7 +77,7 @@ void print_bitboard(Bitboard b) {
{
std::cout << "+---+---+---+---+---+---+---+---+" << '\n';
for (File f = FILE_A; f <= FILE_H; f++)
std::cout << "| " << (bit_is_set(b, make_square(f, r)) ? "X " : " ");
std::cout << "| " << ((b & make_square(f, r)) ? "X " : " ");
std::cout << "|\n";
}
@@ -213,7 +213,7 @@ 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)
set_bit(&StepAttacksBB[make_piece(c, pt)][s], to);
StepAttacksBB[make_piece(c, pt)][s] |= to;
}
Square RDeltas[] = { DELTA_N, DELTA_E, DELTA_S, DELTA_W };
@@ -231,12 +231,12 @@ void bitboards_init() {
for (Square s1 = SQ_A1; s1 <= SQ_H8; s1++)
for (Square s2 = SQ_A1; s2 <= SQ_H8; s2++)
if (bit_is_set(PseudoAttacks[QUEEN][s1], s2))
if (PseudoAttacks[QUEEN][s1] & s2)
{
Square delta = (s2 - s1) / square_distance(s1, s2);
for (Square s = s1 + delta; s != s2; s += delta)
set_bit(&BetweenBB[s1][s2], s);
BetweenBB[s1][s2] |= s;
}
}
@@ -252,9 +252,9 @@ namespace {
square_is_ok(s) && square_distance(s, s - deltas[i]) == 1;
s += deltas[i])
{
set_bit(&attack, s);
attack |= s;
if (bit_is_set(occupied, s))
if (occupied & s)
break;
}