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Last conversions to Score in evaluate.cpp

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No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba 2009-11-07 15:56:56 +01:00
parent 1ecd8e13ee
commit 15ec3e911e
2 changed files with 48 additions and 56 deletions
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100
src/evaluate.cpp
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@ -46,11 +46,9 @@ namespace {
const int GrainSize = 8;
// Evaluation weights, initialized from UCI options
int WeightMobilityMidgame, WeightMobilityEndgame;
int WeightPawnStructureMidgame, WeightPawnStructureEndgame;
int WeightPassedPawnsMidgame, WeightPassedPawnsEndgame;
int WeightKingSafety[2];
int WeightSpace;
Score WeightMobility, WeightPawnStructure;
Score WeightPassedPawns, WeightSpace;
Score WeightKingSafety[2];
// Internal evaluation weights. These are applied on top of the evaluation
// weights read from UCI parameters. The purpose is to be able to change
@ -58,15 +56,12 @@ namespace {
// parameters at 100, which looks prettier.
//
// Values modified by Joona Kiiski
const int WeightMobilityMidgameInternal = 248;
const int WeightMobilityEndgameInternal = 271;
const int WeightPawnStructureMidgameInternal = 233;
const int WeightPawnStructureEndgameInternal = 201;
const int WeightPassedPawnsMidgameInternal = 252;
const int WeightPassedPawnsEndgameInternal = 259;
const int WeightKingSafetyInternal = 247;
const int WeightKingOppSafetyInternal = 259;
const int WeightSpaceInternal = 46;
const Score WeightMobilityInternal = Score(248, 271);
const Score WeightPawnStructureInternal = Score(233, 201);
const Score WeightPassedPawnsInternal = Score(252, 259);
const Score WeightSpaceInternal = Score( 46, 0);
const Score WeightKingSafetyInternal = Score(247, 0);
const Score WeightKingOppSafetyInternal = Score(259, 0);
// Mobility and outposts bonus modified by Joona Kiiski
//
@ -149,8 +144,8 @@ namespace {
const Score QueenOn7thBonus = Score(27, 54);
// Rooks on open files (modified by Joona Kiiski)
const Value RookOpenFileBonus = Value(43);
const Value RookHalfOpenFileBonus = Value(19);
const Score RookOpenFileBonus = Score(43, 43);
const Score RookHalfOpenFileBonus = Score(19, 19);
// Penalty for rooks trapped inside a friendly king which has lost the
// right to castle.
@ -158,7 +153,7 @@ namespace {
// Penalty for a bishop on a7/h7 (a2/h2 for black) which is trapped by
// enemy pawns.
const Value TrappedBishopA7H7Penalty = Value(300);
const Score TrappedBishopA7H7Penalty = Score(300, 300);
// Bitboard masks for detecting trapped bishops on a7/h7 (a2/h2 for black)
const Bitboard MaskA7H7[2] = {
@ -169,7 +164,7 @@ namespace {
// Penalty for a bishop on a1/h1 (a8/h8 for black) which is trapped by
// a friendly pawn on b2/g2 (b7/g7 for black). This can obviously only
// happen in Chess960 games.
const Value TrappedBishopA1H1Penalty = Value(100);
const Score TrappedBishopA1H1Penalty = Score(100, 100);
// Bitboard masks for detecting trapped bishops on a1/h1 (a8/h8 for black)
const Bitboard MaskA1H1[2] = {
@ -215,8 +210,9 @@ namespace {
// ThreatBonus[][] contains bonus according to which piece type
// attacks which one.
const Score ThreatBonus[8][8] = {
#define Z Score(0, 0)
const Score ThreatBonus[8][8] = {
{ Z, Z, Z, Z, Z, Z, Z, Z }, // not used
{ Z, S(18,37), Z, S(37,47), S(55,97), S(55,97), Z, Z }, // KNIGHT attacks
{ Z, S(18,37), S(37,47), Z, S(55,97), S(55,97), Z, Z }, // BISHOP attacks
@ -225,18 +221,15 @@ namespace {
{ Z, Z, Z, Z, Z, Z, Z, Z }, // not used
{ Z, Z, Z, Z, Z, Z, Z, Z }, // not used
{ Z, Z, Z, Z, Z, Z, Z, Z } // not used
#undef Z
};
// ThreatedByPawnPenalty[] contains a penalty according to which piece
// type is attacked by an enemy pawn.
const Value MidgameThreatedByPawnPenalty[8] = {
V(0), V(0), V(56), V(56), V(76), V(86), V(0), V(0)
const Score ThreatedByPawnPenalty[8] = {
Z, Z, S(56, 70), S(56, 70), S(76, 99), S(86, 118), Z, Z
};
const Value EndgameThreatedByPawnPenalty[8] = {
V(0), V(0), V(70), V(70), V(99), V(118), V(0), V(0)
};
#undef Z
// InitKingDanger[] contains bonuses based on the position of the defending
// king.
@ -282,9 +275,9 @@ namespace {
void evaluate_passed_pawns(const Position& pos, EvalInfo& ei);
void evaluate_trapped_bishop_a7h7(const Position& pos, Square s, Color us, EvalInfo& ei);
void evaluate_trapped_bishop_a1h1(const Position& pos, Square s, Color us, EvalInfo& ei);
inline Score apply_weight(Score v, int wmg, int weg);
inline Score apply_weight(Score v, Score weight);
Value scale_by_game_phase(const Score& v, Phase ph, const ScaleFactor sf[]);
int weight_option(const std::string& opt, int weight);
Score weight_option(const std::string& mgOpt, const std::string& egOpt, Score internalWeight);
void init_safety();
}
@ -333,7 +326,7 @@ Value do_evaluate(const Position& pos, EvalInfo& ei, int threadID) {
// Probe the pawn hash table
ei.pi = PawnTable[threadID]->get_pawn_info(pos);
ei.value += apply_weight(ei.pi->value(), WeightPawnStructureMidgame, WeightPawnStructureEndgame);
ei.value += apply_weight(ei.pi->value(), WeightPawnStructure);
// Initialize king attack bitboards and king attack zones for both sides
ei.attackedBy[WHITE][KING] = pos.attacks_from<KING>(pos.king_square(WHITE));
@ -398,7 +391,7 @@ Value do_evaluate(const Position& pos, EvalInfo& ei, int threadID) {
}
// Mobility
ei.value += apply_weight(ei.mobility, WeightMobilityMidgame, WeightMobilityEndgame);
ei.value += apply_weight(ei.mobility, WeightMobility);
// If we don't already have an unusual scale factor, check for opposite
// colored bishop endgames, and use a lower scale for those
@ -501,15 +494,12 @@ void read_weights(Color us) {
Color them = opposite_color(us);
WeightMobilityMidgame = weight_option("Mobility (Middle Game)", WeightMobilityMidgameInternal);
WeightMobilityEndgame = weight_option("Mobility (Endgame)", WeightMobilityEndgameInternal);
WeightPawnStructureMidgame = weight_option("Pawn Structure (Middle Game)", WeightPawnStructureMidgameInternal);
WeightPawnStructureEndgame = weight_option("Pawn Structure (Endgame)", WeightPawnStructureEndgameInternal);
WeightPassedPawnsMidgame = weight_option("Passed Pawns (Middle Game)", WeightPassedPawnsMidgameInternal);
WeightPassedPawnsEndgame = weight_option("Passed Pawns (Endgame)", WeightPassedPawnsEndgameInternal);
WeightSpace = weight_option("Space", WeightSpaceInternal);
WeightKingSafety[us] = weight_option("Cowardice", WeightKingSafetyInternal);
WeightKingSafety[them] = weight_option("Aggressiveness", WeightKingOppSafetyInternal);
WeightMobility = weight_option("Mobility (Middle Game)", "Mobility (Endgame)", WeightMobilityInternal);
WeightPawnStructure = weight_option("Pawn Structure (Middle Game)", "Pawn Structure (Endgame)", WeightPawnStructureInternal);
WeightPassedPawns = weight_option("Passed Pawns (Middle Game)", "Passed Pawns (Endgame)", WeightPassedPawnsInternal);
WeightSpace = weight_option("Space", "Space", WeightSpaceInternal);
WeightKingSafety[us] = weight_option("Cowardice", "Cowardice", WeightKingSafetyInternal);
WeightKingSafety[them] = weight_option("Aggressiveness", "Aggressiveness", WeightKingOppSafetyInternal);
// If running in analysis mode, make sure we use symmetrical king safety. We do this
// by replacing both WeightKingSafety[us] and WeightKingSafety[them] by their average.
@ -611,7 +601,7 @@ namespace {
// Decrease score if we are attacked by an enemy pawn. Remaining part
// of threat evaluation must be done later when we have full attack info.
if (bit_is_set(ei.attackedBy[Them][PAWN], s))
ei.value -= Sign[Us] * Score(MidgameThreatedByPawnPenalty[Piece], EndgameThreatedByPawnPenalty[Piece]);
ei.value -= Sign[Us] * ThreatedByPawnPenalty[Piece];
// Bishop and knight outposts squares
if ((Piece == BISHOP || Piece == KNIGHT) && pos.square_is_weak(s, Them))
@ -646,9 +636,9 @@ namespace {
if (ei.pi->file_is_half_open(Us, f))
{
if (ei.pi->file_is_half_open(Them, f))
ei.value += Sign[Us] * Score(RookOpenFileBonus, RookOpenFileBonus);
ei.value += Sign[Us] * RookOpenFileBonus;
else
ei.value += Sign[Us] * Score(RookHalfOpenFileBonus, RookHalfOpenFileBonus);
ei.value += Sign[Us] * RookHalfOpenFileBonus;
}
// Penalize rooks which are trapped inside a king. Penalize more if
@ -892,7 +882,7 @@ namespace {
// that the king safety scores can sometimes be very big, and that
// capturing a single attacking piece can therefore result in a score
// change far bigger than the value of the captured piece.
Score v = apply_weight(Score(SafetyTable[attackUnits], 0), WeightKingSafety[Us], 0);
Score v = apply_weight(Score(SafetyTable[attackUnits], 0), WeightKingSafety[Us]);
ei.value -= Sign[Us] * v;
@ -1025,7 +1015,7 @@ namespace {
}
// Add the scores for this pawn to the middle game and endgame eval.
ei.value += Sign[Us] * apply_weight(Score(mbonus, ebonus), WeightPassedPawnsMidgame, WeightPassedPawnsEndgame);
ei.value += Sign[Us] * apply_weight(Score(mbonus, ebonus), WeightPassedPawns);
} // while
}
@ -1065,7 +1055,7 @@ namespace {
// If one side queens at least three plies before the other, that side wins
if (movesToGo[winnerSide] <= movesToGo[loserSide] - 3)
ei.value += Score(0, Sign[winnerSide] * (UnstoppablePawnValue - Value(0x40 * (movesToGo[winnerSide]/2))));
ei.value += Sign[winnerSide] * Score(0, UnstoppablePawnValue - Value(0x40 * (movesToGo[winnerSide]/2)));
// If one side queens one ply before the other and checks the king or attacks
// the undefended opponent's queening square, that side wins. To avoid cases
@ -1086,7 +1076,7 @@ namespace {
if ( (b & pos.pieces(KING, loserSide))
||(bit_is_set(b, loserQSq) && !bit_is_set(ei.attacked_by(loserSide), loserQSq)))
ei.value += Score(0, Sign[winnerSide] * (UnstoppablePawnValue - Value(0x40 * (movesToGo[winnerSide]/2))));
ei.value += Sign[winnerSide] * Score(0, UnstoppablePawnValue - Value(0x40 * (movesToGo[winnerSide]/2)));
}
}
}
@ -1108,7 +1098,7 @@ namespace {
&& pos.see(s, b6) < 0
&& pos.see(s, b8) < 0)
{
ei.value -= Sign[us] * Score(TrappedBishopA7H7Penalty, TrappedBishopA7H7Penalty);
ei.value -= Sign[us] * TrappedBishopA7H7Penalty;
}
}
@ -1142,16 +1132,16 @@ namespace {
if (pos.piece_on(b2) == pawn)
{
Value penalty;
Score penalty;
if (!pos.square_is_empty(b3))
penalty = 2*TrappedBishopA1H1Penalty;
penalty = 2 * TrappedBishopA1H1Penalty;
else if (pos.piece_on(c3) == pawn)
penalty = TrappedBishopA1H1Penalty;
else
penalty = TrappedBishopA1H1Penalty / 2;
ei.value -= Sign[us] * Score(penalty, penalty);
ei.value -= Sign[us] * penalty;
}
}
@ -1185,14 +1175,14 @@ namespace {
int space = count_1s_max_15<HasPopCnt>(safeSquares)
+ count_1s_max_15<HasPopCnt>(behindFriendlyPawns & safeSquares);
ei.value += Sign[Us] * apply_weight(Score(space * ei.mi->space_weight(), 0), WeightSpace, 0);
ei.value += Sign[Us] * apply_weight(Score(space * ei.mi->space_weight(), 0), WeightSpace);
}
// apply_weight() applies an evaluation weight to a value
inline Score apply_weight(Score v, int wmg, int weg) {
return Score(v.mg() * wmg, v.eg() * weg) / 0x100;
inline Score apply_weight(Score v, Score w) {
return v * w / 0x100;
}
@ -1214,11 +1204,11 @@ namespace {
// weight_option() computes the value of an evaluation weight, by combining
// an UCI-configurable weight with an internal weight.
// two UCI-configurable weights (midgame and endgame) with an internal weight.
int weight_option(const std::string& opt, int internalWeight) {
Score weight_option(const std::string& mgOpt, const std::string& egOpt, Score internalWeight) {
int uciWeight = get_option_value_int(opt);
Score uciWeight(get_option_value_int(mgOpt), get_option_value_int(egOpt));
uciWeight = (uciWeight * 0x100) / 100;
return (uciWeight * internalWeight) / 0x100;
}

4
src/value.h
View file

@ -83,9 +83,11 @@ private:
ScoreValue v;
};
inline Score operator+(Score s1, Score s2) { return Score(s1.mg() + s2.mg(), s1.eg() + s2.eg()); }
inline Score operator-(Score s1, Score s2) { return Score(s1.mg() - s2.mg(), s1.eg() - s2.eg()); }
inline Score operator*(Score s1, Score s2) { return Score(s1.mg() * s2.mg(), s1.eg() * s2.eg()); }
inline Score operator*(int i, Score s) { return Score(i * s.mg(), i * s.eg()); }
inline Score operator*(Score s, int i) { return s * i; }
inline Score operator*(Score s, int i) { return Score(s.mg() * i, s.eg() * i); }
inline Score operator/(Score s, int i) { return Score(s.mg() / i, s.eg() / i); }
inline Score operator-(Score s) { return Score(-s.mg(), -s.eg()); }