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Use move_pawns() in Pawns::probe

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And rename some stuff.

No functional change.
This commit is contained in:
Marco Costalba
2013-06-16 10:08:44 +02:00
parent 02420d4670
commit 1fd020a8ba
4 changed files with 37 additions and 35 deletions
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7
src/pawns.cpp
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@@ -84,6 +84,7 @@ namespace {
Bitboard theirPawns, Pawns::Entry* e) {
const Color Them = (Us == WHITE ? BLACK : WHITE);
const Square Up = (Us == WHITE ? DELTA_N : DELTA_S);
Bitboard b;
Square s;
@@ -138,7 +139,7 @@ namespace {
// The friendly pawn needs to be at least two ranks closer than the
// enemy pawn in order to help the potentially backward pawn advance.
backward = (b | (Us == WHITE ? b << 8 : b >> 8)) & theirPawns;
backward = (b | shift_bb<Up>(b)) & theirPawns;
}
assert(opposed | passed | (attack_span_mask(Us, s) & theirPawns));
@@ -208,8 +209,8 @@ Entry* probe(const Position& pos, Table& entries) {
Bitboard wPawns = pos.pieces(WHITE, PAWN);
Bitboard bPawns = pos.pieces(BLACK, PAWN);
e->pawnAttacks[WHITE] = ((wPawns & ~FileHBB) << 9) | ((wPawns & ~FileABB) << 7);
e->pawnAttacks[BLACK] = ((bPawns & ~FileHBB) >> 7) | ((bPawns & ~FileABB) >> 9);
e->pawnAttacks[WHITE] = shift_bb<DELTA_NE>(wPawns) | shift_bb<DELTA_NW>(wPawns);
e->pawnAttacks[BLACK] = shift_bb<DELTA_SE>(bPawns) | shift_bb<DELTA_SW>(bPawns);
e->value = evaluate_pawns<WHITE>(pos, wPawns, bPawns, e)
- evaluate_pawns<BLACK>(pos, bPawns, wPawns, e);