/src/quantlib/ql/models/equity/roughhestonmodel.cpp
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1 | | /* -*- mode: c++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ |
2 | | |
3 | | /* |
4 | | Copyright (C) 2026 Colin Alberts |
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 | | <https://www.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 | | #include <ql/models/equity/roughhestonmodel.hpp> |
21 | | |
22 | | namespace QuantLib { |
23 | | |
24 | | RoughHestonModel::RoughHestonModel(const ext::shared_ptr<HestonProcess> & process, |
25 | | Real hurst) |
26 | 0 | : CalibratedModel(6), process_(process) { |
27 | 0 | arguments_[0] = ConstantParameter(process_->theta(), PositiveConstraint()); |
28 | 0 | arguments_[1] = ConstantParameter(process_->kappa(), PositiveConstraint()); |
29 | 0 | arguments_[2] = ConstantParameter(process_->sigma(), PositiveConstraint()); |
30 | 0 | arguments_[3] = ConstantParameter(process_->rho(), BoundaryConstraint(-1.0, 1.0)); |
31 | 0 | arguments_[4] = ConstantParameter(process_->v0(), PositiveConstraint()); |
32 | 0 | arguments_[5] = ConstantParameter(hurst, BoundaryConstraint(0.0, 0.5)); |
33 | |
|
34 | 0 | registerWith(process_->riskFreeRate()); |
35 | 0 | registerWith(process_->dividendYield()); |
36 | 0 | registerWith(process_->s0()); |
37 | 0 | } Unexecuted instantiation: QuantLib::RoughHestonModel::RoughHestonModel(boost::shared_ptr<QuantLib::HestonProcess> const&, double) Unexecuted instantiation: QuantLib::RoughHestonModel::RoughHestonModel(boost::shared_ptr<QuantLib::HestonProcess> const&, double) |
38 | | |
39 | 0 | void RoughHestonModel::generateArguments() { |
40 | 0 | process_ = ext::make_shared<HestonProcess>(process_->riskFreeRate(), |
41 | 0 | process_->dividendYield(), |
42 | 0 | process_->s0(), |
43 | 0 | v0(), kappa(), theta(), |
44 | 0 | sigma(), rho()); |
45 | 0 | } |
46 | | |
47 | | } |