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/* -*- mode: c++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
Copyright (C) 2005 Klaus Spanderen
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
<https://www.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.
*/
#include <ql/models/equity/hestonmodel.hpp>
#include <ql/quotes/simplequote.hpp>
#include <ql/shared_ptr.hpp>
namespace QuantLib {
HestonModel::HestonModel(const ext::shared_ptr<HestonProcess> & process)
: CalibratedModel(5), process_(process) {
arguments_[0] = ConstantParameter(process->theta(),
PositiveConstraint());
arguments_[1] = ConstantParameter(process->kappa(),
PositiveConstraint());
arguments_[2] = ConstantParameter(process->sigma(),
PositiveConstraint());
arguments_[3] = ConstantParameter(process->rho(),
BoundaryConstraint(-1.0, 1.0));
arguments_[4] = ConstantParameter(process->v0(),
PositiveConstraint());
HestonModel::generateArguments();
registerWith(process_->riskFreeRate());
registerWith(process_->dividendYield());
registerWith(process_->s0());
}
void HestonModel::generateArguments() {
process_ = ext::make_shared<HestonProcess>(process_->riskFreeRate(),
process_->dividendYield(),
process_->s0(),
v0(), kappa(), theta(),
sigma(), rho());
}
}
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