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Simplify RankAttacks initialization

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Simplify by replacing the manual ray-casting loop with a single call to the canonical sliding_attack() helper.

closes https://github.com/official-stockfish/Stockfish/pull/6869

No functional change
This commit is contained in:
dav1312
2026-06-06 10:13:46 +02:00
committed by Joost VandeVondele
parent 73826352d4
commit 92fe6b6f4c
1 changed files with 1 additions and 16 deletions
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src/attacks.cpp
+1 -16
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@@ -80,22 +80,7 @@ constexpr auto RankAttacks = []() {
std::array<std::array<uint8_t, 256>, FILE_NB> table{};
for (int file = 0; file < 8; ++file)
for (int occ = 0; occ < 256; ++occ)
{
uint8_t attacks = 0;
for (int f = file + 1; f <= 7; ++f)
{
attacks |= uint8_t(1 << f);
if (occ & (1 << f))
break;
}
for (int f = file - 1; f >= 0; --f)
{
attacks |= uint8_t(1 << f);
if (occ & (1 << f))
break;
}
table[file][occ] = attacks;
}
table[file][occ] = uint8_t(sliding_attack(ROOK, Square(file), occ));
return table;
}();