QuantLib: a free/open-source library for quantitative finance
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extendedblackvariancecurve.hpp
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1/* -*- mode: c++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2
3/*
4 Copyright (C) 2008 Frank Hövermann
5
6 This file is part of QuantLib, a free-software/open-source library
7 for financial quantitative analysts and developers - http://quantlib.org/
8
9 QuantLib is free software: you can redistribute it and/or modify it
10 under the terms of the QuantLib license. You should have received a
11 copy of the license along with this program; if not, please email
12 <quantlib-dev@lists.sf.net>. The license is also available online at
13 <http://quantlib.org/license.shtml>.
14
15 This program is distributed in the hope that it will be useful, but WITHOUT
16 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17 FOR A PARTICULAR PURPOSE. See the license for more details.
18*/
19
20/*! \file extendedblackvariancecurve.hpp
21 \brief Black volatility curve modelled as variance curve
22*/
23
24#ifndef quantlib_extended_black_variance_curve_hpp
25#define quantlib_extended_black_variance_curve_hpp
26
29#include <ql/handle.hpp>
30#include <ql/quote.hpp>
31
32namespace QuantLib {
33
34 //! Black volatility curve modelled as variance curve
35 /*! This class is similar to BlackVarianceCurve, but extends it to
36 use quotes for the input volatilities.
37 */
39 public:
41 const std::vector<Date>& dates,
42 std::vector<Handle<Quote> > volatilities,
44 bool forceMonotoneVariance = true);
45
46 DayCounter dayCounter() const override { return dayCounter_; }
47 Date maxDate() const override;
48 Real minStrike() const override;
49 Real maxStrike() const override;
50
51 template <class Interpolator>
52 void setInterpolation(const Interpolator& i = Interpolator()) {
53 varianceCurve_ = i.interpolate(times_.begin(), times_.end(),
54 variances_.begin());
57 }
58
59 void accept(AcyclicVisitor&) override;
60 void update() override;
61
62 private:
63 Real blackVarianceImpl(Time t, Real) const override;
64 void setVariances();
67 std::vector<Handle<Quote> > volatilities_;
68 std::vector<Time> times_;
69 std::vector<Real> variances_;
72 };
73
75 return maxDate_;
76 }
77
79 return QL_MIN_REAL;
80 }
81
83 return QL_MAX_REAL;
84 }
85
87 auto* v1 = dynamic_cast<Visitor<ExtendedBlackVarianceCurve>*>(&v);
88 if (v1 != nullptr)
89 v1->visit(*this);
90 else
92 }
93}
94
95
96#endif
Black volatility term structure base classes.
degenerate base class for the Acyclic Visitor pattern
Definition: visitor.hpp:33
void accept(AcyclicVisitor &) override
Concrete date class.
Definition: date.hpp:125
day counter class
Definition: daycounter.hpp:44
Black volatility curve modelled as variance curve.
Real minStrike() const override
the minimum strike for which the term structure can return vols
std::vector< Handle< Quote > > volatilities_
DayCounter dayCounter() const override
the day counter used for date/time conversion
void setInterpolation(const Interpolator &i=Interpolator())
Date maxDate() const override
the latest date for which the curve can return values
Real blackVarianceImpl(Time t, Real) const override
Black variance calculation.
Real maxStrike() const override
the maximum strike for which the term structure can return vols
Shared handle to an observable.
Definition: handle.hpp:41
base class for 1-D interpolations.
virtual const Date & referenceDate() const
the date at which discount = 1.0 and/or variance = 0.0
Visitor for a specific class
Definition: visitor.hpp:40
virtual void visit(T &)=0
const DefaultType & t
#define QL_MAX_REAL
Definition: qldefines.hpp:176
#define QL_MIN_REAL
Definition: qldefines.hpp:175
Real Time
continuous quantity with 1-year units
Definition: types.hpp:62
QL_REAL Real
real number
Definition: types.hpp:50
Globally accessible relinkable pointer.
base class for 1-D interpolations
Definition: any.hpp:35
ext::shared_ptr< BlackVolTermStructure > v
purely virtual base class for market observables