QuantLib: a free/open-source library for quantitative finance
fully annotated source code - version 1.34
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chisquaredistribution.hpp
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1/* -*- mode: c++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2
3/*
4 Copyright (C) 2002, 2003 Sadruddin Rejeb
5 Copyright (C) 2007 Klaus Spanderen
6
7 This file is part of QuantLib, a free-software/open-source library
8 for financial quantitative analysts and developers - http://quantlib.org/
9
10 QuantLib is free software: you can redistribute it and/or modify it
11 under the terms of the QuantLib license. You should have received a
12 copy of the license along with this program; if not, please email
13 <quantlib-dev@lists.sf.net>. The license is also available online at
14 <http://quantlib.org/license.shtml>.
15
16 This program is distributed in the hope that it will be useful, but WITHOUT
17 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
18 FOR A PARTICULAR PURPOSE. See the license for more details.
19*/
20
21/*! \file chisquaredistribution.hpp
22 \brief Chi-square (central and non-central) distributions
23*/
24
25#ifndef quantlib_chi_square_distribution_hpp
26#define quantlib_chi_square_distribution_hpp
27
28#include <ql/types.hpp>
29#include <functional>
30
31namespace QuantLib {
32
34 public:
36 Real operator()(Real x) const;
37 private:
39 };
40
42 public:
44 : df_(df), ncp_(ncp) {}
45 Real operator()(Real x) const;
46 private:
48 };
49
51 public:
53 : df_(df), ncp_(ncp) {}
54 Real operator()(Real x) const;
55 private:
57 };
58
60 public:
62 Size maxEvaluations=10,
63 Real accuracy = 1e-8);
64 Real operator()(Real x) const;
65
66 private:
68 const Real guess_;
71 };
72
73}
74
75
76#endif
NonCentralCumulativeChiSquareDistribution nonCentralDist_
QL_REAL Real
real number
Definition: types.hpp:50
std::size_t Size
size of a container
Definition: types.hpp:58
Definition: any.hpp:35
Custom types.