From: Fabian Fichter <ianfab@users.noreply.github.com>
Date: Sat, 6 Apr 2019 15:56:11 +0000 (+0200)
Subject: Add missing bitboard operator
X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=82cc0783648a99c954066631c57e7b8373f83a6b;p=fairystockfish.git

Add missing bitboard operator

Fix issues with shogi variants due to upstream merge.
---

diff --git a/src/bitboard.h b/src/bitboard.h
index 38db8e0..f7e422a 100644
--- a/src/bitboard.h
+++ b/src/bitboard.h
@@ -149,6 +149,7 @@ inline Bitboard  operator^( Bitboard  b, Square s) { return b ^  square_bb(s); }
 inline Bitboard& operator|=(Bitboard& b, Square s) { return b |= square_bb(s); }
 inline Bitboard& operator^=(Bitboard& b, Square s) { return b ^= square_bb(s); }
 
+inline Bitboard  operator-( Bitboard  b, Square s) { return b & ~square_bb(s); }
 inline Bitboard& operator-=(Bitboard& b, Square s) { return b &= ~square_bb(s); }
 
 constexpr bool more_than_one(Bitboard b) {