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Micro-optimize king evaluation

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Reuse already calculated value, instead of calling
king_safety() again.

Patch suggested by Balint Pfliegel.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2012-04-28 10:37:55 +01:00
parent 2aac860db3
commit e8d89ca5b0
1 changed files with 1 additions and 1 deletions
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2
src/evaluate.cpp
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@@ -775,7 +775,7 @@ Value do_evaluate(const Position& pos, Value& margin) {
attackUnits = std::min(25, (ei.kingAttackersCount[Them] * ei.kingAttackersWeight[Them]) / 2) attackUnits = std::min(25, (ei.kingAttackersCount[Them] * ei.kingAttackersWeight[Them]) / 2)
+ 3 * (ei.kingAdjacentZoneAttacksCount[Them] + popcount<Max15>(undefended)) + 3 * (ei.kingAdjacentZoneAttacksCount[Them] + popcount<Max15>(undefended))
+ InitKingDanger[relative_square(Us, ksq)] + InitKingDanger[relative_square(Us, ksq)]
- mg_value(ei.pi->king_safety<Us>(pos, ksq)) / 32; - mg_value(score) / 32;
// Analyse enemy's safe queen contact checks. First find undefended // Analyse enemy's safe queen contact checks. First find undefended
// squares around the king attacked by enemy queen... // squares around the king attacked by enemy queen...