1927double NormalizeSwingPrice(const double value,const int digits)1928{1929   if(!MathIsValidNumber(value) || value>=9223372036854775808.0 || value< -9223372036854775808.0)1930      return value;1931   long whole=(long)value;1932   uint udigits=(uint)digits;1933   int n=(udigits>10 ? 11 : (int)udigits);1934   double power=1.0;1935   for(int k=0;k<n;k++) power*=10.0;1936   long fraction=(long)((value-(double)whole)*power+(value>0 ? 0.5000001 : -0.5000001));1937   return (double)fraction/power+(double)whole;1938}19391940// A zero divisor returns false before lotScale changes.1941bool CalculatePriceAndLotScales(const double reference,const double previousDailyOpen,1942   const bool useVariable,const bool adjustLots,1943   double &priceScale,double &lotScale)1944{1945   double ratio=1.0;1946   if(reference>=1000.0) ratio=previousDailyOpen/reference;1947   priceScale=(useVariable ? ratio : 1.0);1948   if(adjustLots && priceScale==0.0) return false;1949   lotScale=(adjustLots ? 1.0/priceScale : 1.0);1950   if(priceScale==0.0) priceScale=1.0;1951   return true;1952}19531954double CalculatePriceDistanceUnit(const double point,const int digits)1955{1956   if(digits==3 || digits==5) return point*10.0;1957   if(digits==1) return point/10.0;1958   return point;1959}19601961// Compare day-of-year: both transition dates remain outside DST for the whole day.1962bool IsAmericanDst(const datetime now)1963{1964   MqlDateTime current;1965   if(!TimeToStruct(now,current) || current.year<1987) return false;1966   int year=current.year,firstMonth,lastMonth,firstDay,lastDay;1967   if(year<2007)1968   {1969      firstMonth=4;1970      lastMonth=10;1971      firstDay=(6*year-year/4+2)%7+1;1972      lastDay=31-((5*year)/4+1)%7;1973   }1974   else1975   {1976      firstMonth=3;