size_t PVSize, PVIdx;
TimeManager TimeMgr;
- float BestMoveChanges;
+ double BestMoveChanges;
Value DrawValue[COLOR_NB];
HistoryStats History;
GainsStats Gains;
while (++depth <= MAX_PLY && !Signals.stop && (!Limits.depth || depth <= Limits.depth))
{
// Age out PV variability metric
- BestMoveChanges *= 0.8f;
+ BestMoveChanges *= 0.8;
// Save last iteration's scores before first PV line is searched and all
// the move scores but the (new) PV are set to -VALUE_INFINITE.
/// Constants
const int MoveHorizon = 50; // Plan time management at most this many moves ahead
- const float MaxRatio = 7.0f; // When in trouble, we can step over reserved time with this ratio
- const float StealRatio = 0.33f; // However we must not steal time from remaining moves over this ratio
+ const double MaxRatio = 7.0; // When in trouble, we can step over reserved time with this ratio
+ const double StealRatio = 0.33; // However we must not steal time from remaining moves over this ratio
// MoveImportance[] is based on naive statistical analysis of "how many games are still undecided
}
-void TimeManager::pv_instability(float bestMoveChanges) {
+void TimeManager::pv_instability(double bestMoveChanges) {
unstablePVExtraTime = int(bestMoveChanges * optimumSearchTime);
}
template<TimeType T>
int remaining(int myTime, int movesToGo, int currentPly, int slowMover)
{
- const float TMaxRatio = (T == OptimumTime ? 1 : MaxRatio);
- const float TStealRatio = (T == OptimumTime ? 0 : StealRatio);
+ const double TMaxRatio = (T == OptimumTime ? 1 : MaxRatio);
+ const double TStealRatio = (T == OptimumTime ? 0 : StealRatio);
int thisMoveImportance = move_importance(currentPly) * slowMover / 100;
int otherMovesImportance = 0;
for (int i = 1; i < movesToGo; ++i)
otherMovesImportance += move_importance(currentPly + 2 * i);
- float ratio1 = (TMaxRatio * thisMoveImportance) / float(TMaxRatio * thisMoveImportance + otherMovesImportance);
- float ratio2 = (thisMoveImportance + TStealRatio * otherMovesImportance) / float(thisMoveImportance + otherMovesImportance);
+ double ratio1 = (TMaxRatio * thisMoveImportance) / double(TMaxRatio * thisMoveImportance + otherMovesImportance);
+ double ratio2 = (thisMoveImportance + TStealRatio * otherMovesImportance) / double(thisMoveImportance + otherMovesImportance);
return int(floor(myTime * std::min(ratio1, ratio2)));
}
class TimeManager {
public:
void init(const Search::LimitsType& limits, int currentPly, Color us);
- void pv_instability(float bestMoveChanges);
+ void pv_instability(double bestMoveChanges);
int available_time() const { return optimumSearchTime + unstablePVExtraTime; }
int maximum_time() const { return maximumSearchTime; }