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Use more_than_one() instead of single_bit()

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It is more correct given what the function does. In
particular single_bit() returns true also in case of
empty bitboards.

Of course also the usual renaming while there :-)

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2012-04-14 09:16:34 +01:00
parent 25a9b601b2
commit f59323b56a
8 changed files with 67 additions and 68 deletions
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4
src/pawns.cpp
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@@ -152,8 +152,8 @@ Score PawnTable::evaluate_pawns(const Position& pos, Bitboard ourPawns,
// chain (but not the backward one).
chain = ourPawns & adjacent_files_bb(f) & b;
isolated = !(ourPawns & adjacent_files_bb(f));
doubled = ourPawns & squares_in_front_of(Us, s);
opposed = theirPawns & squares_in_front_of(Us, s);
doubled = ourPawns & forward_bb(Us, s);
opposed = theirPawns & forward_bb(Us, s);
passed = !(theirPawns & passed_pawn_mask(Us, s));
// Test for backward pawn