jirayu_sri/stockfish
1
0
Fork 0
mirror of https://github.com/official-stockfish/Stockfish.git synced 2026-07-22 12:47:08 +00:00
Code Issues Packages Projects Releases Wiki Activity

Revert "Replace aligned() function with line_bb() and simplify king piece detection" (#5915)

Browse Source 
closes https://github.com/official-stockfish/Stockfish/pull/5915

No functional change

Co-authored-by: Robert Nürnberg <robert.nurnberg@gmx.de>
This commit is contained in:
xu-shawn
2025-02-28 09:50:59 +01:00
committed by GitHub
co-authored by Robert Nürnberg
parent 5c617e579c
commit f3bfce3531
1 changed files with 3 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/position.cpp
+3 -3
View File
@@ -560,7 +560,7 @@ bool Position::legal(Move m) const {
// A non-king move is legal if and only if it is not pinned or it
// is moving along the ray towards or away from the king.
return !(blockers_for_king(us) & from) || line_bb(from, to) & pieces(us, KING);
return !(blockers_for_king(us) & from) || aligned(from, to, square<KING>(us));
}
@@ -648,7 +648,7 @@ bool Position::gives_check(Move m) const {
// Is there a discovered check?
if (blockers_for_king(~sideToMove) & from)
return !(line_bb(from, to) & pieces(~sideToMove, KING) || m.type_of() == CASTLING);
return !aligned(from, to, square<KING>(~sideToMove)) || m.type_of() == CASTLING;
switch (m.type_of())
{
@@ -656,7 +656,7 @@ bool Position::gives_check(Move m) const {
return false;
case PROMOTION :
return attacks_bb(m.promotion_type(), to, pieces() ^ from) & pieces(~sideToMove, KING);
return attacks_bb(m.promotion_type(), to, pieces() ^ from) & square<KING>(~sideToMove);
// En passant capture with check? We have already handled the case of direct
// checks and ordinary discovered check, so the only case we need to handle