/usr/include/openturns/KissFFT.hxx is in libopenturns-dev 1.5-7build2.
This file is owned by root:root, with mode 0o644.
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/**
* @file KissFFT.hxx
* @brief This class is enables to build an exponential covariance
* model, a second order model's implementation
*
* 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/>.
*
* @author schueller
* @date 2012-04-18 17:56:46 +0200 (Wed, 18 Apr 2012)
*/
#ifndef OPENTURNS_KISSFFT_HXX
#define OPENTURNS_KISSFFT_HXX
#include "PersistentObject.hxx"
#include "FFTImplementation.hxx"
BEGIN_NAMESPACE_OPENTURNS
/**
* @class KissFFT
*/
class OT_API KissFFT
: public FFTImplementation
{
CLASSNAME;
public:
/** Default constructor without parameters */
KissFFT();
/** Virtual copy constructor */
KissFFT * clone() const;
/** FFT transformation on complex */
NumericalComplexCollection transform(const NumericalComplexCollection & collection) const;
/** FFT transformation with application on a block-part of the collection */
NumericalComplexCollection transform(const NumericalComplexCollection & collection,
const UnsignedInteger first,
const UnsignedInteger size) const;
/** FFT inverse transformation */
NumericalComplexCollection inverseTransform(const NumericalComplexCollection & collection) const;
/** FFT inverse transformation with application on a block-part of the collection */
NumericalComplexCollection inverseTransform(const NumericalComplexCollection & collection,
const UnsignedInteger first,
const UnsignedInteger size) const;
/** FFT 2D transformation on complex */
ComplexMatrix transform2D(const ComplexMatrix & complexMatrix) const;
/** FFT 2D transformation on real matrix */
ComplexMatrix transform2D(const Matrix & matrix) const;
/** FFT 2D transformation on sample */
ComplexMatrix transform2D(const NumericalSample & sample) const;
/** IFFT 2D transformation on complex */
ComplexMatrix inverseTransform2D(const ComplexMatrix & complexMatrix) const;
/** IFFT 2D transformation on real matrix */
ComplexMatrix inverseTransform2D(const Matrix & matrix) const;
/** IFFT 2D transformation on sample */
ComplexMatrix inverseTransform2D(const NumericalSample & sample) const;
/** FFT 3D transformation */
ComplexTensor transform3D(const ComplexTensor & tensor) const;
/** FFT 3D transformation on real data */
ComplexTensor transform3D(const Tensor & tensor) const;
/** IFFT 3D transformation */
ComplexTensor inverseTransform3D(const ComplexTensor & tensor) const;
/** IFFT 3D transformation */
ComplexTensor inverseTransform3D(const Tensor & tensor) const;
/** String converter */
String __repr__() const;
/** String converter */
String __str__(const String & offset = "") const;
private:
ComplexMatrix fft2D(const ComplexMatrix & complexMatrix, const Bool isIFFT) const;
ComplexTensor fft3D(const ComplexTensor & tensor, const Bool isIFFT) const;
} ; /* class KissFFT */
END_NAMESPACE_OPENTURNS
#endif /* OPENTURNS_KISSFFT_HXX */
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