/usr/include/openturns/ExponentialIntegralFunctions.hxx is in libopenturns-dev 1.7-3.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 | // -*- C++ -*-
/**
* @brief Efficient implementation of the exponential integral function
* for complex arguments
*
* Copyright 2005-2015 Airbus-EDF-IMACS-Phimeca
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef OPENTURNS_EXPONENTIALINTEGRALFUNCTIONS_HXX
#define OPENTURNS_EXPONENTIALINTEGRALFUNCTIONS_HXX
#include "OTprivate.hxx"
BEGIN_NAMESPACE_OPENTURNS
namespace ExponentialIntegralFunctions
{
NumericalComplex Ei(const NumericalComplex & z);
NumericalScalar Ei(const NumericalScalar z);
NumericalComplex EiPowerSeries(const NumericalComplex & z);
NumericalScalar EiPowerSeries(const NumericalScalar z);
NumericalComplex EiAsymptoticSeries(const NumericalComplex & z);
NumericalScalar EiAsymptoticSeries(const NumericalScalar z);
NumericalComplex EiContinuedFractionBackward(const NumericalComplex & z);
NumericalScalar EiContinuedFractionBackward(const NumericalScalar z);
NumericalComplex EiContinuedFractionForward(const NumericalComplex & z);
NumericalScalar EiContinuedFractionForward(const NumericalScalar z);
Bool hasConverged(const NumericalComplex & current,
const NumericalComplex & previous);
} // ExponentialIntegralFunctions
END_NAMESPACE_OPENTURNS
#endif /* OPENTURNS_EXPONENTIALINTEGRALFUNCTIONS_HXX */
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