/usr/include/openturns/FFTImplementation.hxx is in libopenturns-dev 1.9-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/**
* @brief This class is enables to launch an FFT transform/inverse transform
*
* Copyright 2005-2017 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_FFTIMPLEMENTATION_HXX
#define OPENTURNS_FFTIMPLEMENTATION_HXX
#include "openturns/PersistentObject.hxx"
#include "openturns/Collection.hxx"
#include "openturns/ComplexMatrix.hxx"
#include "openturns/Matrix.hxx"
#include "openturns/Sample.hxx"
#include "openturns/ComplexTensor.hxx"
#include "openturns/Tensor.hxx"
BEGIN_NAMESPACE_OPENTURNS
/**
* @class FFTImplementation
*/
class OT_API FFTImplementation
: public PersistentObject
{
CLASSNAME;
public:
typedef Collection<Scalar> ScalarCollection;
typedef Collection<Complex> ComplexCollection;
/** Default constructor without parameters */
FFTImplementation();
/** Virtual copy constructor */
virtual FFTImplementation * clone() const;
/** FFT transformation on real */
virtual ComplexCollection transform(const ScalarCollection & collection) const;
/** FFT transformation on real - The transformation is applied on a part of the collection*/
virtual ComplexCollection transform(const ScalarCollection & collection,
const UnsignedInteger first,
const UnsignedInteger size) const;
/** FFT transformation on real with a regular sequence of the collection (between first and last, by step = step)*/
virtual ComplexCollection transform(const ScalarCollection & collection,
const UnsignedInteger first,
const UnsignedInteger step,
const UnsignedInteger last) const;
/** FFT transformation on complex */
virtual ComplexCollection transform(const ComplexCollection & collection) const;
/** FFT transformation on complex - For some FFT implementation, the transformation is applied on a part of the collection */
virtual ComplexCollection transform(const ComplexCollection & collection,
const UnsignedInteger first,
const UnsignedInteger size) const;
/** FFT transformation on complex - For some FFT implementation, the need is to transform a regular sequence of the collection (between first and last, by step = step)*/
virtual ComplexCollection transform(const ComplexCollection & collection,
const UnsignedInteger first,
const UnsignedInteger step,
const UnsignedInteger last) const;
/** FFT inverse transformation */
virtual ComplexCollection inverseTransform(const ScalarCollection & collection) const;
/** FFT inverse transformation - The transformation is applied on a part of the collection */
virtual ComplexCollection inverseTransform(const ScalarCollection & collection,
const UnsignedInteger first,
const UnsignedInteger size) const;
/** FFT inverse transformation on a regular sequence of the collection (between first and last, spearated by step)*/
virtual ComplexCollection inverseTransform(const ScalarCollection & collection,
const UnsignedInteger first,
const UnsignedInteger step,
const UnsignedInteger last) const;
/** FFT inverse transformation */
virtual ComplexCollection inverseTransform(const ComplexCollection & collection) const;
/** FFT inverse transformation - The transformation is applied on a part of the collection */
virtual ComplexCollection inverseTransform(const ComplexCollection & collection,
const UnsignedInteger first,
const UnsignedInteger size) const;
/** FFT transformation on a regular sequence of the collection (between first and last, spearated by step)*/
virtual ComplexCollection inverseTransform(const ComplexCollection & collection,
const UnsignedInteger first,
const UnsignedInteger step,
const UnsignedInteger last) const;
/** FFT 2D transformation on complex */
virtual ComplexMatrix transform2D(const ComplexMatrix & complexMatrix) const;
/** FFT 2D transformation on real matrix */
virtual ComplexMatrix transform2D(const Matrix & matrix) const;
/** FFT 2D transformation on sample */
virtual ComplexMatrix transform2D(const Sample & sample) const;
/** IFFT 2D transformation on complex */
virtual ComplexMatrix inverseTransform2D(const ComplexMatrix & complexMatrix) const;
/** IFFT 2D transformation on real matrix */
virtual ComplexMatrix inverseTransform2D(const Matrix & matrix) const;
/** IFFT 2D transformation on sample */
virtual ComplexMatrix inverseTransform2D(const Sample & sample) const;
/** FFT 3D transformation */
virtual ComplexTensor transform3D(const ComplexTensor & tensor) const;
/** FFT 3D transformation on real data */
virtual ComplexTensor transform3D(const Tensor & tensor) const;
/** IFFT 3D transformation */
virtual ComplexTensor inverseTransform3D(const ComplexTensor & tensor) const;
/** IFFT 3D transformation */
virtual ComplexTensor inverseTransform3D(const Tensor & tensor) const;
/** String converter */
virtual String __repr__() const;
/** String converter */
virtual String __str__(const String & offset = "") const;
} ; /* class FFTImplementation */
END_NAMESPACE_OPENTURNS
#endif /* OPENTURNS_FFTIMPLEMENTATION_HXX */
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