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Revert "Generalize shift_bb() to handle double pushes"

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Seems to intorduce some compiler warning as
reported by Gary. Warning seems bogus, but
revert anyhow.

No functional change.
This commit is contained in:
Marco Costalba
2014-04-21 20:54:55 +02:00
parent 56273fca1e
commit a66e6e5ad9
2 changed files with 6 additions and 7 deletions
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8
src/evaluate.cpp
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@@ -702,9 +702,7 @@ namespace {
template<Color Us>
int evaluate_space(const Position& pos, const EvalInfo& ei) {
const Color Them = (Us == WHITE ? BLACK : WHITE);
const Square Down = (Us == WHITE ? DELTA_S : DELTA_N);
const Square DownDown = (Us == WHITE ? DELTA_SS : DELTA_NN);
const Color Them = (Us == WHITE ? BLACK : WHITE);
// Find the safe squares for our pieces inside the area defined by
// SpaceMask[]. A square is unsafe if it is attacked by an enemy
@@ -716,8 +714,8 @@ namespace {
// Find all squares which are at most three squares behind some friendly pawn
Bitboard behind = pos.pieces(Us, PAWN);
behind |= shift_bb< Down>(behind);
behind |= shift_bb<DownDown>(behind);
behind |= (Us == WHITE ? behind >> 8 : behind << 8);
behind |= (Us == WHITE ? behind >> 16 : behind << 16);
// Since SpaceMask[Us] is fully on our half of the board
assert(unsigned(safe >> (Us == WHITE ? 32 : 0)) == 0);