blackvolsurface.hpp

/* -*- mode: c++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
 
/*
 Copyright (C) 2002, 2003 Ferdinando Ametrano
 Copyright (C) 2003, 2004, 2005, 2006 StatPro Italia srl
 
 This file is part of QuantLib, a free-software/open-source library
 for financial quantitative analysts and developers - http://quantlib.org/
 
 QuantLib is free software: you can redistribute it and/or modify it
 under the terms of the QuantLib license.  You should have received a
 copy of the license along with this program; if not, please email
 <quantlib-dev@lists.sf.net>. The license is also available online at
 <http://quantlib.org/license.shtml>.
 
 This program is distributed in the hope that it will be useful, but WITHOUT
 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 FOR A PARTICULAR PURPOSE.  See the license for more details.
*/
 
#ifndef quantlib_black_vol_surface_hpp
#define quantlib_black_vol_surface_hpp
 
#include <ql/experimental/volatility/blackatmvolcurve.hpp>
 
namespace QuantLib {
 
    class SmileSection;
 
 
    class BlackVolSurface : public BlackAtmVolCurve {
      public:
 
        BlackVolSurface(BusinessDayConvention bdc = Following,
                        const DayCounter& dc = DayCounter());
        BlackVolSurface(const Date& referenceDate,
                        const Calendar& cal = Calendar(),
                        BusinessDayConvention bdc = Following,
                        const DayCounter& dc = DayCounter());
        BlackVolSurface(Natural settlementDays,
                        const Calendar&,
                        BusinessDayConvention bdc = Following,
                        const DayCounter& dc = DayCounter());
 
 
        ext::shared_ptr<SmileSection> smileSection(const Period&,
                                                     bool extrapolate) const;
        ext::shared_ptr<SmileSection> smileSection(const Date&,
                                                     bool extrapolate) const;
        ext::shared_ptr<SmileSection> smileSection(Time,
                                                     bool extrapolate) const;
 
        void accept(AcyclicVisitor&) override;
      protected:
 
 
        Real atmVarianceImpl(Time t) const override;
        Volatility atmVolImpl(Time t) const override;
 
        virtual ext::shared_ptr<SmileSection> smileSectionImpl(Time) const=0;
    };
 
    // inline definitions
 
    inline ext::shared_ptr<SmileSection>
    BlackVolSurface::smileSection(const Period& p,
                                  bool extrapolate) const {
        return smileSection(optionDateFromTenor(p), extrapolate);
    }
 
    inline ext::shared_ptr<SmileSection>
    BlackVolSurface::smileSection(const Date& d,
                                  bool extrapolate) const {
        return smileSection(timeFromReference(d), extrapolate);
    }
 
    inline ext::shared_ptr<SmileSection>
    BlackVolSurface::smileSection(Time t,
                                  bool extrapolate) const {
        checkRange(t, extrapolate);
        return smileSectionImpl(t);
    }
 
}
 
#endif