QuantLib
: a free/open-source library for quantitative finance
fully annotated source code - version 1.34
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ql
math
integrals
filonintegral.hpp
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/* -*- mode: c++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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Copyright (C) 2014 Klaus Spanderen
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This file is part of QuantLib, a free-software/open-source library
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for financial quantitative analysts and developers - http://quantlib.org/
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QuantLib is free software: you can redistribute it and/or modify it
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under the terms of the QuantLib license. You should have received a
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copy of the license along with this program; if not, please email
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<quantlib-dev@lists.sf.net>. The license is also available online at
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<http://quantlib.org/license.shtml>.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the license for more details.
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*/
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/*! \file filonintegral.hpp
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\brief Filon's formulae for sine and cosine Integrals
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*/
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#ifndef quantlib_filon_integral_h
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#define quantlib_filon_integral_h
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#include <
ql/math/integrals/integral.hpp
>
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namespace
QuantLib
{
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//! Integral of a one-dimensional function
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/*! Given a number \f$ N \f$ of intervals, the integral of
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a function \f$ f \f$ between \f$ a \f$ and \f$ b \f$ is
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calculated by means of Filon's sine and cosine integrals
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*/
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/*! References:
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Abramowitz, M. and Stegun, I. A. (Eds.).
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Handbook of Mathematical Functions with Formulas, Graphs,
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and Mathematical Tables, 9th printing. New York: Dover,
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pp. 890-891, 1972.
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\test the correctness of the result is tested by checking it
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against known good values.
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*/
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class
FilonIntegral
:
public
Integrator
{
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public
:
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enum
Type
{
Sine
,
Cosine
};
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FilonIntegral
(
Type
type,
Real
t
,
Size
intervals);
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protected
:
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Real
integrate
(
const
ext::function<
Real
(
Real
)>&
f
,
Real
a,
Real
b
)
const override
;
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private
:
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const
Type
type_
;
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const
Real
t_
;
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const
Size
intervals_
,
n_
;
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};
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}
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#endif
QuantLib::FilonIntegral
Integral of a one-dimensional function.
Definition:
filonintegral.hpp:46
QuantLib::FilonIntegral::n_
const Size n_
Definition:
filonintegral.hpp:57
QuantLib::FilonIntegral::Type
Type
Definition:
filonintegral.hpp:48
QuantLib::FilonIntegral::Sine
@ Sine
Definition:
filonintegral.hpp:48
QuantLib::FilonIntegral::Cosine
@ Cosine
Definition:
filonintegral.hpp:48
QuantLib::FilonIntegral::intervals_
const Size intervals_
Definition:
filonintegral.hpp:57
QuantLib::FilonIntegral::integrate
Real integrate(const ext::function< Real(Real)> &f, Real a, Real b) const override
Definition:
filonintegral.cpp:42
QuantLib::FilonIntegral::type_
const Type type_
Definition:
filonintegral.hpp:55
QuantLib::FilonIntegral::t_
const Real t_
Definition:
filonintegral.hpp:56
QuantLib::Integrator
Definition:
integral.hpp:30
f
F f
Definition:
defaultdensitystructure.cpp:32
t
const DefaultType & t
Definition:
defaultprobabilitykey.cpp:39
b
ext::function< Real(Real)> b
Definition:
extendedornsteinuhlenbeckprocess.cpp:30
QuantLib::Real
QL_REAL Real
real number
Definition:
types.hpp:50
QuantLib::Size
std::size_t Size
size of a container
Definition:
types.hpp:58
integral.hpp
Integrators base class definition.
QuantLib
Definition:
any.hpp:35
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