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There is no need to special case KNNK ending

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It is always draw, so use the corresponding proper
evaluation function.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2009-08-08 12:28:03 +01:00
parent 23ceb66950
commit aa925a0e29
3 changed files with 9 additions and 13 deletions
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14
src/material.cpp
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@@ -61,8 +61,6 @@ namespace {
ScalingFunction<KQKRP> ScaleKQKRP(WHITE), ScaleKRPKQ(BLACK);
ScalingFunction<KPsK> ScaleKPsK(WHITE), ScaleKKPs(BLACK);
ScalingFunction<KPKP> ScaleKPKPw(WHITE), ScaleKPKPb(BLACK);
Key KNNKMaterialKey, KKNNMaterialKey;
}
@@ -157,14 +155,6 @@ MaterialInfo* MaterialInfoTable::get_material_info(const Position& pos) {
mi->clear();
mi->key = key;
// A special case before looking for a specialized evaluation function
// KNN vs K is a draw.
if (key == KNNKMaterialKey || key == KKNNMaterialKey)
{
mi->factor[WHITE] = mi->factor[BLACK] = 0;
return mi;
}
// Let's look if we have a specialized evaluation function for this
// particular material configuration. First we look for a fixed
// configuration one, then a generic one if previous search failed.
@@ -348,9 +338,7 @@ MaterialInfo* MaterialInfoTable::get_material_info(const Position& pos) {
EndgameFunctions::EndgameFunctions() {
KNNKMaterialKey = buildKey("KNNK");
KKNNMaterialKey = buildKey("KKNN");
add<EvaluationFunction<KNNK> >("KNNK");
add<EvaluationFunction<KPK> >("KPK");
add<EvaluationFunction<KBNK> >("KBNK");
add<EvaluationFunction<KRKP> >("KRKP");