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Code Issues Releases Wiki Activity

Skip an useless compare in space evaluation

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Spotted by Marek Kwiatkowski.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba 2010-10-05 22:10:42 +01:00
parent 812e843939
commit 1ee1d852fe
1 changed files with 2 additions and 3 deletions
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5
src/evaluate.cpp
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@ -331,10 +331,8 @@ Value do_evaluate(const Position& pos, Value& margin) {
bonus += evaluate_passed_pawns<WHITE>(pos, ei) bonus += evaluate_passed_pawns<WHITE>(pos, ei)
- evaluate_passed_pawns<BLACK>(pos, ei); - evaluate_passed_pawns<BLACK>(pos, ei);
Phase phase = mi->game_phase();
// Evaluate space for both sides, only in middle-game. // Evaluate space for both sides, only in middle-game.
if (phase > PHASE_ENDGAME && mi->space_weight() > 0) if (mi->space_weight())
{ {
int s = evaluate_space<WHITE, HasPopCnt>(pos, ei) - evaluate_space<BLACK, HasPopCnt>(pos, ei); int s = evaluate_space<WHITE, HasPopCnt>(pos, ei) - evaluate_space<BLACK, HasPopCnt>(pos, ei);
bonus += apply_weight(make_score(s * mi->space_weight(), 0), Weights[Space]); bonus += apply_weight(make_score(s * mi->space_weight(), 0), Weights[Space]);
@ -343,6 +341,7 @@ Value do_evaluate(const Position& pos, Value& margin) {
// Scale winning side if position is more drawish that what it appears // Scale winning side if position is more drawish that what it appears
ScaleFactor sf = eg_value(bonus) > VALUE_ZERO ? mi->scale_factor(pos, WHITE) ScaleFactor sf = eg_value(bonus) > VALUE_ZERO ? mi->scale_factor(pos, WHITE)
: mi->scale_factor(pos, BLACK); : mi->scale_factor(pos, BLACK);
Phase phase = mi->game_phase();
// If we don't already have an unusual scale factor, check for opposite // If we don't already have an unusual scale factor, check for opposite
// colored bishop endgames, and use a lower scale for those. // colored bishop endgames, and use a lower scale for those.