/// <summary>
/// Gets a random number provider for a given seed and pdf.
/// </summary>
/// <param name="pdfName">Name of PDF.</param>
/// <returns>
/// A random number provider.
/// </returns>
public IRandomNumberProvider GetRandomProvider(string pdfName = null)
{
string workingPdfName = null;
if (pdfName == null)
{
if (CurrentPdfName == null)
{
return(_defaultRandomNumberProviderFactory.GetRandom(Seed));
}
else
{
workingPdfName = CurrentPdfName;
}
}
else
{
workingPdfName = pdfName;
}
if (_pdfDictionary.ContainsKey(workingPdfName))
{
if (!_pdfInstancesDictionary.ContainsKey(workingPdfName))
{
_pdfInstancesDictionary[workingPdfName] = _pdfDictionary[workingPdfName]();
}
if (!_cdfDictionary.ContainsKey(workingPdfName))
{
_cdfDictionary[workingPdfName] = new Cdf(_pdfInstancesDictionary[workingPdfName], CdfPoints);
}
if (!_customRandomNumberProviderFactories.ContainsKey(workingPdfName))
{
_customRandomNumberProviderFactories[workingPdfName] = new CustomRandomNumberProviderFactory(_cdfDictionary[workingPdfName]);
}
return(_customRandomNumberProviderFactories[workingPdfName].GetRandom(Seed));
}
else
{
throw new ArgumentException("Unknown pdf", nameof(pdfName));
}
}
/// <summary>
/// Initializes a new instance of the <see cref="CustomRandomNumberProviderFactory"/> class.
/// </summary>
/// <param name="cdf">Cdf.</param>
public CustomRandomNumberProviderFactory(Cdf cdf)
{
_cdf = cdf ?? throw new ArgumentNullException(nameof(cdf));
}
/// <summary>
/// Initializes a new instance of the <see cref="CustomRandomNumberProvider"/> class.
/// </summary>
/// <param name="cdf">Cdf.</param>
/// <param name="baseRandom">Base random provider.</param>
public CustomRandomNumberProvider(Cdf cdf, IRandomDoubleProvider baseRandom)
{
_cdf = cdf;
_baseRandom = baseRandom;
}