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Remove redundant condition from capture_stage()

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Change a non functional promotion check to an assert.

closes https://github.com/official-stockfish/Stockfish/pull/4436

No functional change
This commit is contained in:
mstembera 2023-03-11 11:51:08 -08:00 • committed by Joost VandeVondele
parent d1e17989b5
commit 7077fbdd14
2 changed files with 2 additions and 3 deletions
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3
src/position.cpp
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@ -569,8 +569,7 @@ bool Position::pseudo_legal(const Move m) const {
: MoveList<NON_EVASIONS>(*this).contains(m); : MoveList<NON_EVASIONS>(*this).contains(m);
// Is not a promotion, so promotion piece must be empty // Is not a promotion, so promotion piece must be empty
if (promotion_type(m) - KNIGHT != NO_PIECE_TYPE) assert(promotion_type(m) - KNIGHT == NO_PIECE_TYPE);
return false;
// If the 'from' square is not occupied by a piece belonging to the side to // If the 'from' square is not occupied by a piece belonging to the side to
// move, the move is obviously not legal. // move, the move is obviously not legal.

2
src/position.h
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@ -393,7 +393,7 @@ inline bool Position::capture(Move m) const {
// is needed to avoid the generation of duplicate moves. // is needed to avoid the generation of duplicate moves.
inline bool Position::capture_stage(Move m) const { inline bool Position::capture_stage(Move m) const {
assert(is_ok(m)); assert(is_ok(m));
return capture(m) || (type_of(m) == PROMOTION && promotion_type(m) == QUEEN); return capture(m) || promotion_type(m) == QUEEN;
} }
inline Piece Position::captured_piece() const { inline Piece Position::captured_piece() const {