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Introduce another two (bitboard,square) operators

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And simplify the code.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2012-02-26 17:34:24 +01:00
parent 8751b18cf0
commit 96eefc4af6
4 changed files with 39 additions and 64 deletions
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8
src/movegen.cpp
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@@ -71,13 +71,9 @@ namespace {
// Because we generate only legal castling moves we need to verify that
// when moving the castling rook we do not discover some hidden checker.
// For instance an enemy queen in SQ_A1 when castling rook is in SQ_B1.
if (pos.is_chess960())
{
Bitboard occ = pos.occupied_squares();
occ ^= rfrom;
if (pos.attackers_to(kto, occ) & enemies)
if ( pos.is_chess960()
&& (pos.attackers_to(kto, pos.occupied_squares() ^ rfrom) & enemies))
return mlist;
}
(*mlist++).move = make_castle(kfrom, rfrom);