/usr/include/openturns/OrthogonalDirection.hxx is in libopenturns-dev 1.7-3.
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
*
* 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_ORTHOGONALDIRECTION_HXX
#define OPENTURNS_ORTHOGONALDIRECTION_HXX
#include "SamplingStrategyImplementation.hxx"
#include "Indices.hxx"
#include "Matrix.hxx"
BEGIN_NAMESPACE_OPENTURNS
/**
* @class OrthogonalDirection
*/
class OT_API OrthogonalDirection :
public SamplingStrategyImplementation
{
CLASSNAME;
public:
/** Default constructor */
OrthogonalDirection();
/** Constructor with parameters */
OrthogonalDirection(const UnsignedInteger dimension,
const UnsignedInteger size);
/** Virtual constructor */
virtual OrthogonalDirection * clone() const;
/** Generate a set of directions */
NumericalSample generate() const;
/** String converter */
String __repr__() const;
/** Generate a random realization of an orientation matrix in SO(dimension) uniformly distributed relatively to the Haar mesure of SO(dimension) */
Matrix getUniformOrientationRealization() const;
private:
/** Generate the next permutation of indices in-place in the size_ first elements */
void nextCombination(Indices & indices) const;
/** Add the 2^size linear combinations of columns of Q indicated in the
* size first elements of indices by affecting all the choices of sign
* to the coefficients of the linear combination */
void computePartialSample(const Indices & indices,
const Matrix & Q,
NumericalSample & result) const;
/** Size of the direction subset */
UnsignedInteger size_;
} ; /* class OrthogonalDirection */
END_NAMESPACE_OPENTURNS
#endif /* OPENTURNS_ORTHOGONALDIRECTION_HXX */
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