Alexandria  2.25.0
SDC-CH common library for the Euclid project
NdSampler.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
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11  * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
12  * details.
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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 
19 #ifndef _FUNCTIONUTILS_NDSAMPLER_H
20 #define _FUNCTIONUTILS_NDSAMPLER_H
21 
23 #include "NdArray/NdArray.h"
24 #include <array>
25 #include <functional>
26 #include <vector>
27 
28 namespace Euclid {
29 namespace MathUtils {
30 
47 template <typename... TKnot>
48 class NdSampler {
49 public:
60 
72  template <typename Generator>
73  std::vector<std::tuple<TKnot...>> draw(std::size_t ndraws, Generator& rng) const;
74 
75  template <typename Generator, typename... OKnots>
76  void draw(std::size_t ndraws, Generator& rng, std::vector<std::tuple<OKnots...>>& output) const;
77 };
78 
79 } // namespace MathUtils
80 } // namespace Euclid
81 
82 #define NDSAMPLER_IMPL
84 #undef NDSAMPLER_IMPL
85 
86 #endif // _FUNCTIONUTILS_NDSAMPLER_H
std::vector< std::tuple< TKnot... > > draw(std::size_t ndraws, Generator &rng) const
void draw(std::size_t ndraws, Generator &rng, std::vector< std::tuple< OKnots... >> &output) const
NdSampler(std::tuple< std::vector< TKnot >... > knots, const NdArray::NdArray< double > &grid)