//-------------------------------------------------------------------------
/// <summary>
/// Calculates the present value of the Ibor cap/floor product.
/// <para>
/// The present value of the product is the value on the valuation date.
/// </para>
/// <para>
/// The cap/floor leg and pay leg are typically in the same currency, thus the
/// present value gamma is expressed as a single currency amount in most cases.
///
/// </para>
/// </summary>
/// <param name="capFloor"> the Ibor cap/floor product </param>
/// <param name="ratesProvider"> the rates provider </param>
/// <param name="volatilities"> the volatilities </param>
/// <returns> the present value </returns>
public virtual MultiCurrencyAmount presentValue(ResolvedIborCapFloor capFloor, RatesProvider ratesProvider, IborCapletFloorletVolatilities volatilities)
{
CurrencyAmount pvCapFloorLeg = capFloorLegPricer.presentValue(capFloor.CapFloorLeg, ratesProvider, volatilities);
if (!capFloor.PayLeg.Present)
{
return(MultiCurrencyAmount.of(pvCapFloorLeg));
}
CurrencyAmount pvPayLeg = payLegPricer.presentValue(capFloor.PayLeg.get(), ratesProvider);
return(MultiCurrencyAmount.of(pvCapFloorLeg).plus(pvPayLeg));
}
//-------------------------------------------------------------------------
// create complete lists of caps, volatilities, strikes, expiries
protected internal virtual void reduceRawData(IborCapletFloorletVolatilityDefinition definition, RatesProvider ratesProvider, DoubleArray strikes, DoubleArray volatilityData, DoubleArray errors, LocalDate startDate, LocalDate endDate, SurfaceMetadata metadata, System.Func <Surface, IborCapletFloorletVolatilities> volatilityFunction, IList <double> timeList, IList <double> strikeList, IList <double> volList, IList <ResolvedIborCapFloorLeg> capList, IList <double> priceList, IList <double> errorList)
{
int nStrikes = strikes.size();
for (int i = 0; i < nStrikes; ++i)
{
if (Double.isFinite(volatilityData.get(i)))
{
ResolvedIborCapFloorLeg capFloor = definition.createCap(startDate, endDate, strikes.get(i)).resolve(referenceData);
capList.Add(capFloor);
strikeList.Add(strikes.get(i));
volList.Add(volatilityData.get(i));
ConstantSurface constVolSurface = ConstantSurface.of(metadata, volatilityData.get(i));
IborCapletFloorletVolatilities vols = volatilityFunction(constVolSurface);
timeList.Add(vols.relativeTime(capFloor.FinalFixingDateTime));
priceList.Add(pricer.presentValue(capFloor, ratesProvider, vols).Amount);
errorList.Add(errors.get(i));
}
}
}
