private double CalculateNextX(Random rnd, DoubleSeries s, PFSeriesConfig c, Function f, string fHead, long i)
{
double t = i / c.TimeQuotient;
var arg = ConfigurationParser.ParseArgument("t", t);
var periodicPart = ConfigurationParser.ComputeFunction(fHead, f, arg);
var ar_part_drivers = 0.0;
var ma_part_drivers = 0.0;
lock (seriesDict)
CalculateDriverParts(c.Drivers, out ar_part_drivers, out ma_part_drivers);
var et = rnd.NextGaussian_BoxMuller(c.Mean, c.StdDev); // next noise
var xt = c.C + periodicPart + ar_part_drivers + ma_part_drivers + et;
lock (seriesDict) {
if (s.X.Count > MAX_BUFFER_SIZE)
{
s.X.RemoveAt(0);
}
s.X.Add(xt);
}
return(xt);
}
private double CalculateNextXSimple(Random rnd, DoubleSeries s, PFSeriesConfig c, Function f, string fHead, long i)
{
double t = i / c.TimeQuotient;
var arg = ConfigurationParser.ParseArgument("t", t);
var xt = ConfigurationParser.ComputeFunction(fHead, f, arg);
s.X.Add(xt);
return(xt);
}
