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59 lines
2.0 KiB
C++
59 lines
2.0 KiB
C++
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/*
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* GslQagsIntegrator.hpp, part of LatAnalyze 3
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*
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* Copyright (C) 2013 - 2014 Antonin Portelli
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*
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* LatAnalyze 3 is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* LatAnalyze 3 is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with LatAnalyze 3. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef Latan_GslQagsIntegrator_hpp_
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#define Latan_GslQagsIntegrator_hpp_
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#include <LatAnalyze/Global.hpp>
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#include <LatAnalyze/Function.hpp>
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#include <LatAnalyze/Integrator.hpp>
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#include <gsl/gsl_integration.h>
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BEGIN_NAMESPACE
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/******************************************************************************
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* GSL general quadrature adaptive integration with singularities *
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******************************************************************************/
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class GslQagsIntegrator: public Integrator
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{
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public:
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static const unsigned int defaultLimit = 1000;
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static constexpr double defaultPrec = 1.0e-7;
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public:
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// constructor
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GslQagsIntegrator(const unsigned int limit = defaultLimit,
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const double precision = defaultPrec);
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// destructor
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virtual ~GslQagsIntegrator(void);
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// integral calculation
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virtual double operator()(const DoubleFunction &f, const double xMin,
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const double xMax);
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// get last error
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double getLastError(void) const;
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private:
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unsigned int limit_;
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double precision_, error_;
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gsl_integration_workspace *workspace_;
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};
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END_NAMESPACE
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#endif // Latan_GslQagsIntegrator_hpp_
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