/usr/include/openturns/Cobyla.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 Cobyla is an actual implementation for OptimizationAlgorithmImplementation using the cobyla library
 *
 *  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_COBYLA_HXX
#define OPENTURNS_COBYLA_HXX
#include "openturns/OTprivate.hxx"
#include "openturns/OptimizationAlgorithmImplementation.hxx"
BEGIN_NAMESPACE_OPENTURNS
/**
 * @class cobyla
 * cobyla is an actual implementation for OptimizationAlgorithmImplementation using the cobyla library
 */
class OT_API Cobyla :
  public OptimizationAlgorithmImplementation
{
  CLASSNAME;
public:
  /** Default constructor */
  Cobyla();
  /** Constructor with parameters */
  explicit Cobyla(const OptimizationProblem & problem);
  /** Constructor with parameters */
  Cobyla(const OptimizationProblem & problem,
         const Scalar rhoBeg);
  /** Virtual constructor */
  virtual Cobyla * clone() const;
  /** Performs the actual computation. Must be overloaded by the actual optimisation algorithm */
  void run();
  /** RhoBeg accessor */
  Scalar getRhoBeg() const;
  void setRhoBeg(const Scalar rhoBeg);
  /** String converter */
  String __repr__() const;
  /** Method save() stores the object through the StorageManager */
  void save(Advocate & adv) const;
  /** Method load() reloads the object from the StorageManager */
  void load(Advocate & adv);
protected:
  /** Check whether this problem can be solved by this solver.  Must be overloaded by the actual optimisation algorithm */
  void checkProblem(const OptimizationProblem & problem) const;
private:
  /**
   * Evaluate general objective function and constraint values.
   */
  static int ComputeObjectiveAndConstraint(int n,
      int m,
      double *x,
      double *f,
      double *con,
      void *state);
  Scalar rhoBeg_;
  /// temporary, used to track input/outputs
  Sample evaluationInputHistory_;
  Sample evaluationOutputHistory_;
}; /* class Cobyla */
END_NAMESPACE_OPENTURNS
#endif /* OPENTURNS_COBYLA_HXX */
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