80double RoundVolumeToTwoDecimals(const double value)81{82   long whole=(long)value;83   if(whole==LONG_MIN)84      return value;85   double bias=(value>0.0 ? 0.5000001 : -0.5000001);86   long fraction=(long)((value-(double)whole)*100.0+bias);87   return (double)whole+(double)fraction/100.0;88}8990double QuantizeStrategyVolume(const double value,const VolumeSettings &settings)91{92   double origin=settings.brokerMinimum*settings.multiplier;93   double increment=settings.brokerStep*settings.multiplier;94   return RoundVolumeToTwoDecimals(origin+increment*MathRound((value-origin)/increment));95}9697double CalculateNextVolume(BasketVolumeState &basket,const VolumeSettings &settings,98                           const datetime currentTime)99{100   double result=settings.initial;101   if(basket.positionCount>0)102   {103      if(settings.waitMinutes>0 && basket.positionCount<100)104      {105         // Minute countdown truncates toward zero after the 32-bit time difference.106         uint finish=(uint)basket.lastEntryTime+(uint)settings.waitMinutes*60;107         int seconds=(int)(finish-(uint)currentTime);108         basket.remainingMinutes=seconds/60;109         if(basket.remainingMinutes<=0)110            basket.remainingMinutes=0;111      }112      if(settings.waitMinutes>0 && basket.remainingMinutes>0)113         result=basket.bestPriceVolume;114      else115      {116         result=QuantizeStrategyVolume(basket.bestPriceVolume+settings.initial,settings);117         if(basket.bestPriceVolume-result>-0.005)118         {119            double byCount=QuantizeStrategyVolume(settings.initial+120                           basket.positionCount*settings.initial,settings);121            double nextStep=RoundVolumeToTwoDecimals(basket.bestPriceVolume+122                            settings.brokerStep*settings.multiplier);123            result=MathMax(result,MathMin(byCount,nextStep));124         }125      }126   }127   result=QuantizeStrategyVolume(result,settings);128   if(settings.minimum-result>0.005)129      result=settings.minimum;