Alexandria  2.22.0
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FunctionAdapter.h
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1 /*
2  * Copyright (C) 2012-2021 Euclid Science Ground Segment
3  *
4  * This library is free software; you can redistribute it and/or modify it under
5  * the terms of the GNU Lesser General Public License as published by the Free
6  * Software Foundation; either version 3.0 of the License, or (at your option)
7  * any later version.
8  *
9  * This library is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11  * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
12  * details.
13  *
14  * You should have received a copy of the GNU Lesser General Public License
15  * along with this library; if not, write to the Free Software Foundation, Inc.,
16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
25 #ifndef MATHUTILS_FUNCTIONADAPTER_H_
26 #define MATHUTILS_FUNCTIONADAPTER_H_
27 
29 #include <functional>
30 
31 namespace Euclid {
32 namespace MathUtils {
33 
44 class FunctionAdapter final : public Function {
45 public:
51  explicit FunctionAdapter(std::function<double(double)> function);
52 
54  virtual ~FunctionAdapter() = default;
55 
62  double operator()(const double x) const override;
63 
70  void operator()(const std::vector<double>& xs, std::vector<double>& out) const override;
71 
76  std::unique_ptr<Function> clone() const override;
77 
78 private:
79  std::function<double(double)> m_function;
80 };
81 
82 } // namespace MathUtils
83 } // namespace Euclid
84 
85 #endif /* MATHUTILS_FUNCTIONADAPTER_H_ */
Adapt a std::function<double(double)> to the Function Interface.
std::function< double(double)> m_function
double operator()(const double x) const override
FunctionAdapter(std::function< double(double)> function)
Constructor.
virtual ~FunctionAdapter()=default
Default destructor.
std::unique_ptr< Function > clone() const override
Interface class representing a function with an arbitrary number of parameters.
Definition: Function.h:104