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Simplify pawn threats and merge into ThreatenedByPawn[]

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Tested in no-regression mode,

passed STC
LLR: 2.96 (-2.94,2.94) [-3.00,1.00]
Total: 14477 W: 2493 L: 2362 D: 9622

and LTC
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 51964 W: 7091 L: 7013 D: 37860

bench: 7875814
This commit is contained in:
Ajith
2014-06-12 08:31:33 +09:00
committed by Marco Costalba
parent e10276f45d
commit 84dabe5982
1 changed files with 2 additions and 2 deletions
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4
src/evaluate.cpp
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@@ -147,7 +147,7 @@ namespace {
// ThreatenedByPawn[PieceType] contains a penalty according to which piece
// type is attacked by an enemy pawn.
const Score ThreatenedByPawn[] = {
S(0, 0), S(0, 0), S(56, 70), S(56, 70), S(76, 99), S(86, 118)
S(0, 0), S(0, 0), S(80, 119), S(80, 119), S(117, 199), S(127, 218)
};
// Hanging contains a bonus for each enemy hanging piece
@@ -506,7 +506,7 @@ namespace {
// Add a bonus according if the attacking pieces are minor or major
if (weakEnemies)
{
b = weakEnemies & (ei.attackedBy[Us][PAWN] | ei.attackedBy[Us][KNIGHT] | ei.attackedBy[Us][BISHOP]);
b = weakEnemies & (ei.attackedBy[Us][KNIGHT] | ei.attackedBy[Us][BISHOP]);
if (b)
score += Threat[0][type_of(pos.piece_on(lsb(b)))];