protected override void initializeDates()
{
// dummy ibor index with curve/swap arguments
IborIndex clonedIborIndex = iborIndex_.clone(termStructureHandle_);
// do not pass the spread here, as it might be a Quote i.e. it can dinamically change
swap_ = new MakeVanillaSwap(tenor_, clonedIborIndex, 0.0, fwdStart_)
.withFixedLegDayCount(fixedDayCount_)
.withFixedLegTenor(new Period(fixedFrequency_))
.withFixedLegConvention(fixedConvention_)
.withFixedLegTerminationDateConvention(fixedConvention_)
.withFixedLegCalendar(calendar_)
.withFloatingLegCalendar(calendar_);
earliestDate_ = swap_.startDate();
// Usually...
latestDate_ = swap_.maturityDate();
// ...but due to adjustments, the last floating coupon might
// need a later date for fixing
#if QL_USE_INDEXED_COUPON
FloatingRateCoupon lastFloating = (FloatingRateCoupon)swap_.floatingLeg()[swap_.floatingLeg().Count - 1];
Date fixingValueDate = iborIndex_.valueDate(lastFloating.fixingDate());
Date endValueDate = iborIndex_.maturityDate(fixingValueDate);
latestDate_ = Date.Max(latestDate_, endValueDate);
#endif
}
protected override void initializeDates()
{
// dummy ibor index with curve/swap arguments
IborIndex clonedIborIndex = iborIndex_.clone(termStructureHandle_);
// do not pass the spread here, as it might be a Quote i.e. it can dinamically change
swap_ = new MakeVanillaSwap(tenor_, clonedIborIndex, 0.0, fwdStart_)
.withFixedLegDayCount(fixedDayCount_)
.withFixedLegTenor(new Period(fixedFrequency_))
.withFixedLegConvention(fixedConvention_)
.withFixedLegTerminationDateConvention(fixedConvention_)
.withFixedLegCalendar(calendar_)
.withFloatingLegCalendar(calendar_);
earliestDate_ = swap_.startDate();
// Usually...
latestDate_ = swap_.maturityDate();
// ...but due to adjustments, the last floating coupon might
// need a later date for fixing
#if QL_USE_INDEXED_COUPON
FloatingRateCoupon lastFloating = (FloatingRateCoupon)swap_.floatingLeg()[swap_.floatingLeg().Count - 1];
Date fixingValueDate = iborIndex_.valueDate(lastFloating.fixingDate());
Date endValueDate = iborIndex_.maturityDate(fixingValueDate);
latestDate_ = Date.Max(latestDate_, endValueDate);
#endif
}
public override void initialize(FloatingRateCoupon coupon)
{
coupon_ = coupon as CmsCoupon;
Utils.QL_REQUIRE(coupon_ != null, () => "CMS coupon needed");
gearing_ = coupon_.gearing();
spread_ = coupon_.spread();
fixingDate_ = coupon_.fixingDate();
paymentDate_ = coupon_.date();
SwapIndex swapIndex = coupon_.swapIndex();
rateCurve_ = swapIndex.forwardingTermStructure().link;
Date today = Settings.evaluationDate();
if (paymentDate_ > today)
{
discount_ = rateCurve_.discount(paymentDate_);
}
else
{
discount_ = 1.0;
}
spreadLegValue_ = spread_ * coupon_.accrualPeriod() * discount_;
if (fixingDate_ > today)
{
swapTenor_ = swapIndex.tenor();
VanillaSwap swap = swapIndex.underlyingSwap(fixingDate_);
swapRateValue_ = swap.fairRate();
double bp = 1.0e-4;
annuity_ = (swap.floatingLegBPS() / bp);
int q = (int)swapIndex.fixedLegTenor().frequency();
Schedule schedule = swap.fixedSchedule();
DayCounter dc = swapIndex.dayCounter();
//DayCounter dc = coupon.dayCounter();
double startTime = dc.yearFraction(rateCurve_.referenceDate(), swap.startDate());
double swapFirstPaymentTime = dc.yearFraction(rateCurve_.referenceDate(), schedule.date(1));
double paymentTime = dc.yearFraction(rateCurve_.referenceDate(), paymentDate_);
double delta = (paymentTime - startTime) / (swapFirstPaymentTime - startTime);
switch (modelOfYieldCurve_)
{
case GFunctionFactory.YieldCurveModel.Standard:
gFunction_ = GFunctionFactory.newGFunctionStandard(q, delta, swapTenor_.length());
break;
case GFunctionFactory.YieldCurveModel.ExactYield:
gFunction_ = GFunctionFactory.newGFunctionExactYield(coupon_);
break;
case GFunctionFactory.YieldCurveModel.ParallelShifts: {
Handle <Quote> nullMeanReversionQuote = new Handle <Quote>(new SimpleQuote(0.0));
gFunction_ = GFunctionFactory.newGFunctionWithShifts(coupon_, nullMeanReversionQuote);
}
break;
case GFunctionFactory.YieldCurveModel.NonParallelShifts:
gFunction_ = GFunctionFactory.newGFunctionWithShifts(coupon_, meanReversion_);
break;
default:
throw new ApplicationException("unknown/illegal gFunction type");
}
vanillaOptionPricer_ = new BlackVanillaOptionPricer(swapRateValue_, fixingDate_, swapTenor_, swaptionVolatility().link);
}
}
