Alexandria  2.25.0
SDC-CH common library for the Euclid project
InitFunc.cpp
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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 
19 #include "SOM/InitFunc.h"
20 #include <random>
21 
22 namespace Euclid {
23 namespace SOM {
24 namespace InitFunc {
25 
26 double zeroImpl(void) {
27  return 0;
28 }
29 
31 
32 Signature normalDistribution(double sigma, double mu) {
34  std::mt19937 gen(rd());
35  std::normal_distribution<> d(mu, sigma);
36  return [gen, d]() mutable { return d(gen); };
37 }
38 
39 Signature uniformRandom(double min, double max) {
42  return [unif, re]() mutable { return unif(re); };
43 }
44 
45 } // namespace InitFunc
46 } // namespace SOM
47 } // namespace Euclid
double zeroImpl(void)
Definition: InitFunc.cpp:26
ELEMENTS_API Signature normalDistribution(double sigma, double mu)
Definition: InitFunc.cpp:32
ELEMENTS_API Signature uniformRandom(double min, double max)
Definition: InitFunc.cpp:39