/*! \warning see VanillaOption for notes on implied-volatility
* calculation.
*/
public double impliedVolatility(double targetValue,
GeneralizedBlackScholesProcess process,
double accuracy = 1.0e-4,
int maxEvaluations = 100,
double minVol = 1.0e-7,
double maxVol = 4.0)
{
Utils.QL_REQUIRE(!isExpired(), () => "option expired");
SimpleQuote volQuote = new SimpleQuote();
GeneralizedBlackScholesProcess newProcess = ImpliedVolatilityHelper.clone(process, volQuote);
// engines are built-in for the time being
IPricingEngine engine = null;
switch (exercise_.type())
{
case Exercise.Type.European:
engine = new AnalyticDoubleBarrierEngine(newProcess);
break;
case Exercise.Type.American:
case Exercise.Type.Bermudan:
Utils.QL_FAIL("engine not available for non-European barrier option");
break;
default:
Utils.QL_FAIL("unknown exercise type");
break;
}
return(ImpliedVolatilityHelper.calculate(this, engine, volQuote, targetValue, accuracy, maxEvaluations, minVol, maxVol));
}
public void testEuropeanHaugValues()
{
// Testing double barrier european options against Haug's values
Exercise.Type european = Exercise.Type.European;
NewBarrierOptionData[] values =
{
/* The data below are from
* "The complete guide to option pricing formulas 2nd Ed",E.G. Haug, McGraw-Hill, p.156 and following.
*
* Note:
* The book uses b instead of q (q=r-b)
*/
// BarrierType, barr.lo, barr.hi, type, exercise,strk, s, q, r, t, v, result, tol
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 50.0, 150.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.15, 4.3515, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 50.0, 150.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.25, 6.1644, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 50.0, 150.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.35, 7.0373, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 50.0, 150.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.15, 6.9853, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 50.0, 150.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.25, 7.9336, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 50.0, 150.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.35, 6.5088, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 60.0, 140.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.15, 4.3505, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 60.0, 140.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.25, 5.8500, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 60.0, 140.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.35, 5.7726, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 60.0, 140.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.15, 6.8082, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 60.0, 140.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.25, 6.3383, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 60.0, 140.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.35, 4.3841, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 70.0, 130.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.15, 4.3139, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 70.0, 130.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.25, 4.8293, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 70.0, 130.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.35, 3.7765, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 70.0, 130.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.15, 5.9697, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 70.0, 130.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.25, 4.0004, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 70.0, 130.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.35, 2.2563, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 80.0, 120.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.15, 3.7516, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 80.0, 120.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.25, 2.6387, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 80.0, 120.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.35, 1.4903, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 80.0, 120.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.15, 3.5805, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 80.0, 120.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.25, 1.5098, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 80.0, 120.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.35, 0.5635, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 90.0, 110.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.15, 1.2055, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 90.0, 110.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.25, 0.3098, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 90.0, 110.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.35, 0.0477, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 90.0, 110.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.15, 0.5537, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 90.0, 110.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.25, 0.0441, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 90.0, 110.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.35, 0.0011, 1.0e-4),
// BarrierType, barr.lo, barr.hi, type, exercise,strk, s, q, r, t, v, result, tol
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 50.0, 150.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.25, 0.15, 1.8825, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 50.0, 150.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.25, 0.25, 3.7855, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 50.0, 150.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.25, 0.35, 5.7191, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 50.0, 150.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.50, 0.15, 2.1374, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 50.0, 150.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.50, 0.25, 4.7033, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 50.0, 150.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.50, 0.35, 7.1683, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 60.0, 140.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.25, 0.15, 1.8825, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 60.0, 140.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.25, 0.25, 3.7845, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 60.0, 140.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.25, 0.35, 5.6060, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 60.0, 140.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.50, 0.15, 2.1374, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 60.0, 140.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.50, 0.25, 4.6236, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 60.0, 140.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.50, 0.35, 6.1062, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 70.0, 130.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.25, 0.15, 1.8825, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 70.0, 130.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.25, 0.25, 3.7014, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 70.0, 130.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.25, 0.35, 4.6472, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 70.0, 130.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.50, 0.15, 2.1325, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 70.0, 130.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.50, 0.25, 3.8944, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 70.0, 130.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.50, 0.35, 3.5868, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 80.0, 120.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.25, 0.15, 1.8600, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 80.0, 120.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.25, 0.25, 2.6866, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 80.0, 120.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.25, 0.35, 2.0719, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 80.0, 120.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.50, 0.15, 1.8883, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 80.0, 120.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.50, 0.25, 1.7851, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 80.0, 120.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.50, 0.35, 0.8244, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 90.0, 110.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.25, 0.15, 0.9473, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 90.0, 110.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.25, 0.25, 0.3449, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 90.0, 110.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.25, 0.35, 0.0578, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 90.0, 110.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.50, 0.15, 0.4555, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 90.0, 110.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.50, 0.25, 0.0491, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockOut, 90.0, 110.0, Option.Type.Put, european, 100, 100.0, 0.0, 0.1, 0.50, 0.35, 0.0013, 1.0e-4),
// BarrierType, barr.lo, barr.hi, type, strk, s, q, r, t, v, result, tol
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 50.0, 150.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.15, 0.0000, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 50.0, 150.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.25, 0.0900, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 50.0, 150.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.35, 1.1537, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 50.0, 150.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.15, 0.0292, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 50.0, 150.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.25, 1.6487, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 50.0, 150.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.35, 5.7321, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 60.0, 140.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.15, 0.0010, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 60.0, 140.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.25, 0.4045, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 60.0, 140.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.35, 2.4184, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 60.0, 140.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.15, 0.2062, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 60.0, 140.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.25, 3.2439, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 60.0, 140.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.35, 7.8569, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 70.0, 130.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.15, 0.0376, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 70.0, 130.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.25, 1.4252, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 70.0, 130.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.35, 4.4145, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 70.0, 130.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.15, 1.0447, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 70.0, 130.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.25, 5.5818, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 70.0, 130.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.35, 9.9846, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 80.0, 120.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.15, 0.5999, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 80.0, 120.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.25, 3.6158, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 80.0, 120.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.35, 6.7007, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 80.0, 120.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.15, 3.4340, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 80.0, 120.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.25, 8.0724, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 80.0, 120.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.35, 11.6774, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 90.0, 110.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.15, 3.1460, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 90.0, 110.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.25, 5.9447, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 90.0, 110.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.25, 0.35, 8.1432, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 90.0, 110.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.15, 6.4608, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 90.0, 110.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.25, 9.5382, 1.0e-4),
new NewBarrierOptionData(DoubleBarrier.Type.KnockIn, 90.0, 110.0, Option.Type.Call, european, 100, 100.0, 0.0, 0.1, 0.50, 0.35, 12.2398, 1.0e-4),
};
DayCounter dc = new Actual360();
Date today = Date.Today;
SimpleQuote spot = new SimpleQuote(0.0);
SimpleQuote qRate = new SimpleQuote(0.0);
YieldTermStructure qTS = Utilities.flatRate(today, qRate, dc);
SimpleQuote rRate = new SimpleQuote(0.0);
YieldTermStructure rTS = Utilities.flatRate(today, rRate, dc);
SimpleQuote vol = new SimpleQuote(0.0);
BlackVolTermStructure volTS = Utilities.flatVol(today, vol, dc);
for (int i = 0; i < values.Length; i++)
{
Date exDate = today + (int)(values[i].t * 360 + 0.5);
Exercise exercise = new EuropeanExercise(exDate);
spot.setValue(values[i].s);
qRate.setValue(values[i].q);
rRate.setValue(values[i].r);
vol.setValue(values[i].v);
StrikedTypePayoff payoff = new PlainVanillaPayoff(values[i].type, values[i].strike);
BlackScholesMertonProcess stochProcess = new BlackScholesMertonProcess(
new Handle <Quote>(spot),
new Handle <YieldTermStructure>(qTS),
new Handle <YieldTermStructure>(rTS),
new Handle <BlackVolTermStructure>(volTS));
DoubleBarrierOption opt = new DoubleBarrierOption(values[i].barrierType, values[i].barrierlo,
values[i].barrierhi, 0, // no rebate
payoff, exercise);
// Ikeda/Kunitomo engine
IPricingEngine engine = new AnalyticDoubleBarrierEngine(stochProcess);
opt.setPricingEngine(engine);
double calculated = opt.NPV();
double expected = values[i].result;
double error = Math.Abs(calculated - expected);
if (error > values[i].tol)
{
REPORT_FAILURE("Ikeda/Kunitomo value", values[i].barrierType, values[i].barrierlo,
values[i].barrierhi, payoff, exercise, values[i].s,
values[i].q, values[i].r, today, values[i].v,
expected, calculated, error, values[i].tol);
}
// Wulin Suo/Yong Wang engine
engine = new WulinYongDoubleBarrierEngine(stochProcess);
opt.setPricingEngine(engine);
calculated = opt.NPV();
expected = values[i].result;
error = Math.Abs(calculated - expected);
if (error > values[i].tol)
{
REPORT_FAILURE("Wulin/Yong value", values[i].barrierType, values[i].barrierlo,
values[i].barrierhi, payoff, exercise, values[i].s,
values[i].q, values[i].r, today, values[i].v,
expected, calculated, error, values[i].tol);
}
}
}
internal static global::System.Runtime.InteropServices.HandleRef getCPtr(AnalyticDoubleBarrierEngine obj)
{
return((obj == null) ? new global::System.Runtime.InteropServices.HandleRef(null, global::System.IntPtr.Zero) : obj.swigCPtr);
}
