public static double zSpread(Bond bond, double cleanPrice, YieldTermStructure discount, DayCounter dayCounter, Compounding compounding,
Frequency frequency, Date settlementDate = null, double accuracy = 1.0e-10, int maxIterations = 100,
double guess = 0.0)
{
if (settlementDate == null)
{
settlementDate = bond.settlementDate();
}
Utils.QL_REQUIRE(BondFunctions.isTradable(bond, settlementDate), () =>
"non tradable at " + settlementDate +
" (maturity being " + bond.maturityDate() + ")",
QLNetExceptionEnum.NotTradableException);
double dirtyPrice = cleanPrice + bond.accruedAmount(settlementDate);
dirtyPrice /= 100.0 / bond.notional(settlementDate);
return(CashFlows.zSpread(bond.cashflows(),
discount,
dirtyPrice,
dayCounter, compounding, frequency,
false, settlementDate, settlementDate,
accuracy, maxIterations, guess));
}