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Introduce distance() and unify some API

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Original work by Lucas.

No functional change.
This commit is contained in:
Marco Costalba
2014-11-08 14:04:14 +01:00
parent 8631b08d97
commit 6fb0a1bc40
7 changed files with 63 additions and 69 deletions
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src/evaluate.cpp
+3 -3
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@@ -583,12 +583,12 @@ namespace {
Square blockSq = s + pawn_push(Us);
// Adjust bonus based on the king's proximity
ebonus += square_distance(pos.king_square(Them), blockSq) * 5 * rr
- square_distance(pos.king_square(Us ), blockSq) * 2 * rr;
ebonus += distance(pos.king_square(Them), blockSq) * 5 * rr
- distance(pos.king_square(Us ), blockSq) * 2 * rr;
// If blockSq is not the queening square then consider also a second push
if (relative_rank(Us, blockSq) != RANK_8)
ebonus -= square_distance(pos.king_square(Us), blockSq + pawn_push(Us)) * rr;
ebonus -= distance(pos.king_square(Us), blockSq + pawn_push(Us)) * rr;
// If the pawn is free to advance, then increase the bonus
if (pos.empty(blockSq))