X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Ftimeman.cpp;h=7c3efb352a7b927fcdbabf45fc36e7340cdfd2b6;hp=6112951cc974499db1878c59954959c0b4478064;hb=c7e7d9217b232eb7d75b083a45f001ef998c9deb;hpb=a0cc15ccbc5dc48ea3c871915c8f96c7a624597d

diff --git a/src/timeman.cpp b/src/timeman.cpp
index 6112951c..7c3efb35 100644
--- a/src/timeman.cpp
+++ b/src/timeman.cpp
@@ -78,7 +78,7 @@ namespace {
 
 void TimeManager::pv_instability(double bestMoveChanges) {
 
-  unstablePVExtraTime = int(bestMoveChanges * optimumSearchTime);
+  unstablePVExtraTime = int(bestMoveChanges * optimumSearchTime / 1.4);
 }
 
 
@@ -108,15 +108,15 @@ void TimeManager::init(const Search::LimitsType& limits, int currentPly, Color u
   int minThinkingTime      = Options["Minimum Thinking Time"];
   int slowMover            = Options["Slow Mover"];
 
-  // Initialize to maximum values but unstablePVExtraTime that is reset
+  // Initialize all to maximum values but unstablePVExtraTime that is reset
   unstablePVExtraTime = 0;
   optimumSearchTime = maximumSearchTime = limits.time[us];
 
-  // We calculate optimum time usage for different hypothetic "moves to go"-values and choose the
+  // We calculate optimum time usage for different hypothetical "moves to go"-values and choose the
   // minimum of calculated search time values. Usually the greatest hypMTG gives the minimum values.
   for (hypMTG = 1; hypMTG <= (limits.movestogo ? std::min(limits.movestogo, MoveHorizon) : MoveHorizon); ++hypMTG)
   {
-      // Calculate thinking time for hypothetic "moves to go"-value
+      // Calculate thinking time for hypothetical "moves to go"-value
       hypMyTime =  limits.time[us]
                  + limits.inc[us] * (hypMTG - 1)
                  - emergencyBaseTime
@@ -147,14 +147,14 @@ namespace {
     const double TMaxRatio   = (T == OptimumTime ? 1 : MaxRatio);
     const double TStealRatio = (T == OptimumTime ? 0 : StealRatio);
 
-    int thisMoveImportance = move_importance(currentPly) * slowMover / 100;
+    double thisMoveImportance = double(move_importance(currentPly) * slowMover) / 100;
     int otherMovesImportance = 0;
 
     for (int i = 1; i < movesToGo; ++i)
         otherMovesImportance += move_importance(currentPly + 2 * i);
 
-    double ratio1 = (TMaxRatio * thisMoveImportance) / double(TMaxRatio * thisMoveImportance + otherMovesImportance);
-    double ratio2 = (thisMoveImportance + TStealRatio * otherMovesImportance) / double(thisMoveImportance + otherMovesImportance);
+    double ratio1 = (TMaxRatio * thisMoveImportance) / (TMaxRatio * thisMoveImportance + otherMovesImportance);
+    double ratio2 = (thisMoveImportance + TStealRatio * otherMovesImportance) / (thisMoveImportance + otherMovesImportance);
 
     return int(floor(myTime * std::min(ratio1, ratio2)));
   }