QuantLib: a free/open-source library for quantitative finance
fully annotated source code - version 1.34
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multistepcoterminalswaptions.cpp
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1/* -*- mode: c++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2
3/*
4 Copyright (C) 2006 Giorgio Facchinetti
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
24#include <utility>
25
26namespace QuantLib {
27
29 const std::vector<Time>& rateTimes,
30 const std::vector<Time>& paymentTimes,
31 std::vector<ext::shared_ptr<StrikedTypePayoff> > payoffs)
32 : MultiProductMultiStep(rateTimes), paymentTimes_(paymentTimes), payoffs_(std::move(payoffs)) {
33 checkIncreasingTimes(paymentTimes);
34
35 lastIndex_ = rateTimes.size()-1;
36 }
37
39 const CurveState& currentState,
40 std::vector<Size>& numberCashFlowsThisStep,
41 std::vector<std::vector<MarketModelMultiProduct::CashFlow> >&
42 genCashFlows)
43 {
44 genCashFlows[currentIndex_][0].timeIndex = currentIndex_;
45
46 Rate swapRate = currentState.coterminalSwapRate(currentIndex_);
48 genCashFlows[currentIndex_][0].amount =
49 (*payoffs_[currentIndex_])(swapRate) * annuity;
50 std::fill(numberCashFlowsThisStep.begin(),
51 numberCashFlowsThisStep.end(),0);
52 numberCashFlowsThisStep[currentIndex_] = 1;
54 return (currentIndex_ == lastIndex_);
55 }
56
57 std::unique_ptr<MarketModelMultiProduct>
59 return std::unique_ptr<MarketModelMultiProduct>(new MultiStepCoterminalSwaptions(*this));
60 }
61
62}
Curve state for market-model simulations
Definition: curvestate.hpp:41
virtual Rate coterminalSwapAnnuity(Size numeraire, Size i) const =0
virtual Rate coterminalSwapRate(Size i) const =0
Multiple-step market-model product.
std::unique_ptr< MarketModelMultiProduct > clone() const override
returns a newly-allocated copy of itself
bool nextTimeStep(const CurveState &currentState, std::vector< Size > &numberCashFlowsThisStep, std::vector< std::vector< CashFlow > > &cashFlowsGenerated) override
return value indicates whether path is finished, TRUE means done
std::vector< ext::shared_ptr< StrikedTypePayoff > > payoffs_
MultiStepCoterminalSwaptions(const std::vector< Time > &rateTimes, const std::vector< Time > &paymentTimes, std::vector< ext::shared_ptr< StrikedTypePayoff > >)
QL_REAL Real
real number
Definition: types.hpp:50
Real Rate
interest rates
Definition: types.hpp:70
Definition: any.hpp:35
void checkIncreasingTimes(const std::vector< Time > &times)
check for strictly increasing times, first time greater than zero
Definition: utilities.cpp:92
STL namespace.
Payoffs for various options.