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Update SEE to return a Value

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It seems more natural because the actual returned
value is from PieceValue[] array.

No functional change.
This commit is contained in:
Marco Costalba
2014-02-16 13:06:31 +01:00
parent 17ffc22279
commit 7b0a2f2a90
5 changed files with 17 additions and 15 deletions
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8
src/search.cpp
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@@ -779,7 +779,7 @@ moves_loop: // When in check and at SpNode search starts from here
|| pos.advanced_pawn_push(move);
// Step 12. Extend checks
if (givesCheck && pos.see_sign(move) >= 0)
if (givesCheck && pos.see_sign(move) >= VALUE_ZERO)
ext = ONE_PLY;
// Singular extension search. If all moves but one fail low on a search of
@@ -850,7 +850,7 @@ moves_loop: // When in check and at SpNode search starts from here
}
// Prune moves with negative SEE at low depths
if (predictedDepth < 4 * ONE_PLY && pos.see_sign(move) < 0)
if (predictedDepth < 4 * ONE_PLY && pos.see_sign(move) < VALUE_ZERO)
{
if (SpNode)
splitPoint->mutex.lock();
@@ -1175,7 +1175,7 @@ moves_loop: // When in check and at SpNode search starts from here
continue;
}
if (futilityBase < beta && pos.see(move) <= 0)
if (futilityBase < beta && pos.see(move) <= VALUE_ZERO)
{
bestValue = std::max(bestValue, futilityBase);
continue;
@@ -1193,7 +1193,7 @@ moves_loop: // When in check and at SpNode search starts from here
&& (!InCheck || evasionPrunable)
&& move != ttMove
&& type_of(move) != PROMOTION
&& pos.see_sign(move) < 0)
&& pos.see_sign(move) < VALUE_ZERO)
continue;
// Check for legality just before making the move