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Code Issues Releases Wiki Activity

Simplify squares_aligned()

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Use newly introduced LineBB[]

No functional change.
This commit is contained in:
Marco Costalba 2013-11-10 12:00:15 +01:00
parent 091aff0445
commit a518d5d3ad
2 changed files with 3 additions and 4 deletions
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4
src/bitboard.cpp
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@ -227,8 +227,8 @@ void Bitboards::init() {
for (Square s = s1 + delta; s != s2; s += delta) for (Square s = s1 + delta; s != s2; s += delta)
BetweenBB[s1][s2] |= s; BetweenBB[s1][s2] |= s;
PieceType pc = (PseudoAttacks[BISHOP][s1] & s2) ? BISHOP : ROOK; PieceType pt = (PseudoAttacks[BISHOP][s1] & s2) ? BISHOP : ROOK;
LineBB[s1][s2] = (PseudoAttacks[pc][s1] & PseudoAttacks[pc][s2]) | s1 | s2; LineBB[s1][s2] = (PseudoAttacks[pt][s1] & PseudoAttacks[pt][s2]) | s1 | s2;
} }
} }

3
src/bitboard.h
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@ -227,8 +227,7 @@ inline Bitboard squares_of_color(Square s) {
/// either on a straight or on a diagonal line. /// either on a straight or on a diagonal line.
inline bool squares_aligned(Square s1, Square s2, Square s3) { inline bool squares_aligned(Square s1, Square s2, Square s3) {
return (BetweenBB[s1][s2] | BetweenBB[s1][s3] | BetweenBB[s2][s3]) return LineBB[s1][s2] & s3;
& ( SquareBB[s1] | SquareBB[s2] | SquareBB[s3]);
} }