QuantLib: a free/open-source library for quantitative finance
fully annotated source code - version 1.34
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impliciteulerscheme.hpp
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1/* -*- mode: c++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2
3/*
4 Copyright (C) 2009 Andreas Gaida
5 Copyright (C) 2009 Ralph Schreyer
6 Copyright (C) 2009, 2017 Klaus Spanderen
7
8 This file is part of QuantLib, a free-software/open-source library
9 for financial quantitative analysts and developers - http://quantlib.org/
10
11 QuantLib is free software: you can redistribute it and/or modify it
12 under the terms of the QuantLib license. You should have received a
13 copy of the license along with this program; if not, please email
14 <quantlib-dev@lists.sf.net>. The license is also available online at
15 <http://quantlib.org/license.shtml>.
16
17 This program is distributed in the hope that it will be useful, but WITHOUT
18 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
19 FOR A PARTICULAR PURPOSE. See the license for more details.
20*/
21
22/*! \file impliciteulerscheme.hpp
23 \brief Implicit-Euler scheme
24*/
25
26#ifndef quantlib_implicit_euler_scheme_hpp
27#define quantlib_implicit_euler_scheme_hpp
28
32
33namespace QuantLib {
34
36 public:
38
39 // typedefs
45
46 // constructors
47 explicit ImplicitEulerScheme(ext::shared_ptr<FdmLinearOpComposite> map,
48 const bc_set& bcSet = bc_set(),
49 Real relTol = 1e-8,
50 SolverType solverType = BiCGstab);
51
52 void step(array_type& a, Time t);
53 void setStep(Time dt);
54
56 protected:
57 friend class CrankNicolsonScheme;
58 void step(array_type& a, Time t, Real theta);
59
60 Array apply(const Array& r, Real theta) const;
61
63 ext::shared_ptr<Size> iterations_;
64
66 const ext::shared_ptr<FdmLinearOpComposite> map_;
69 };
70}
71
72#endif
1-D array used in linear algebra.
Definition: array.hpp:52
traits::operator_type operator_type
ext::shared_ptr< Size > iterations_
const BoundaryConditionSchemeHelper bcSet_
const ext::shared_ptr< FdmLinearOpComposite > map_
traits::condition_type condition_type
Array apply(const Array &r, Real theta) const
OperatorTraits< FdmLinearOp > traits
void step(array_type &a, Time t)
std::vector< ext::shared_ptr< bc_type > > bc_set
Operator::array_type array_type
condition to be applied at every time step
const DefaultType & t
composite pattern for linear operators
Real Time
continuous quantity with 1-year units
Definition: types.hpp:62
QL_REAL Real
real number
Definition: types.hpp:50
std::size_t Size
size of a container
Definition: types.hpp:58
Real theta
Definition: any.hpp:35
Differential operator traits.
ext::shared_ptr< YieldTermStructure > r