aGrUM
3.2.0
a C++ library for (probabilistic) graphical models
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utils_random.h
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/****************************************************************************
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* This file is part of the aGrUM/pyAgrum library. *
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* *
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* Copyright (c) 2005-2026 by *
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* - Pierre-Henri WUILLEMIN(_at_LIP6) *
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* - Christophe GONZALES(_at_AMU) *
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* *
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* The aGrUM/pyAgrum library is free software; you can redistribute it *
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* and/or modify it under the terms of either : *
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* *
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* - the GNU Lesser General Public License as published by *
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* the Free Software Foundation, either version 3 of the License, *
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* or (at your option) any later version, *
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* - the MIT license (MIT), *
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* - or both in dual license, as here. *
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* *
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* (see https://agrum.gitlab.io/articles/dual-licenses-lgplv3mit.html) *
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* *
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* This aGrUM/pyAgrum library is distributed in the hope that it will be *
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* useful, but WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES MERCHANTABILITY or FITNESS *
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE *
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER *
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, *
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR *
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* OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* See LICENCES for more details. *
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* *
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* SPDX-FileCopyrightText: Copyright 2005-2026 *
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* - Pierre-Henri WUILLEMIN(_at_LIP6) *
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* - Christophe GONZALES(_at_AMU) *
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* SPDX-License-Identifier: LGPL-3.0-or-later OR MIT *
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* *
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* Contact : info_at_agrum_dot_org *
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* homepage : http://agrum.gitlab.io *
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* gitlab : https://gitlab.com/agrumery/agrum *
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* *
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****************************************************************************/
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#ifndef GUM_UTILS_RANDOM_H
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#define GUM_UTILS_RANDOM_H
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#include <chrono>
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#include <cstdlib>
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#include <ctime>
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#include <iostream>
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#include <numeric>
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#include <random>
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#include <utility>
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#include <vector>
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#include <
agrum/agrum.h
>
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namespace
gum
{
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namespace
_rand_namespace_
{
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std::mt19937&
generator
();
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}
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GUM_SHARED_PUBLIC
Idx
randomValue
(
const
Size
max = 2);
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GUM_SHARED_PUBLIC
double
randomProba
();
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template
< GUM_Numeric GUM_SCALAR >
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std::vector< GUM_SCALAR >
randomDistribution
(
Size
n);
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GUM_SHARED_PUBLIC
unsigned
int
randomGeneratorSeed
();
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GUM_SHARED_PUBLIC
unsigned
int
currentRandomGeneratorValue
();
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GUM_SHARED_PUBLIC
void
initRandom
(
unsigned
int
seed = 0);
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GUM_SHARED_PUBLIC std::mt19937&
randomGenerator
();
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}
/* namespace gum */
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#ifndef GUM_NO_INLINE
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# include <
agrum/base/core/utils_random_inl.h
>
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#endif
// GUM_NO_INLINE
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#include <
agrum/base/core/utils_random_tpl.h
>
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#endif
/* GUM_UTILS_RANDOM_H */
agrum.h
gum::Size
std::size_t Size
In aGrUM, hashed values are unsigned long int.
Definition
types.h:74
gum::Idx
Size Idx
Type for indexes.
Definition
types.h:79
gum::randomValue
GUM_SHARED_PUBLIC Idx randomValue(const Size max=2)
Returns a random Idx between 0 and max-1 included.
Definition
utils_random_inl.h:66
gum::randomGeneratorSeed
GUM_SHARED_PUBLIC unsigned int randomGeneratorSeed()
Returns the aGrUM's seed used by the std::generators.
Definition
utils_random_inl.h:91
gum::initRandom
GUM_SHARED_PUBLIC void initRandom(unsigned int seed=0)
Initialize random generator seed.
Definition
utils_random_inl.h:79
gum::randomGenerator
GUM_SHARED_PUBLIC std::mt19937 & randomGenerator()
define a random_engine with correct seed
Definition
utils_random_inl.h:98
gum::currentRandomGeneratorValue
GUM_SHARED_PUBLIC unsigned int currentRandomGeneratorValue()
returns the current generator's value
Definition
utils_random_inl.h:87
gum::randomProba
GUM_SHARED_PUBLIC double randomProba()
Returns a random double between 0 and 1 included (i.e.
Definition
utils_random_inl.h:73
gum::randomDistribution
std::vector< GUM_SCALAR > randomDistribution(Size n)
Return a random discrete distribution.
Definition
utils_random_tpl.h:57
gum::_rand_namespace_
Definition
utils_random.h:64
gum::_rand_namespace_::generator
std::mt19937 & generator()
Definition
utils_random_inl.h:59
gum
gum is the global namespace for all aGrUM entities
Definition
agrum.h:46
utils_random_inl.h
Contains useful methods for random stuff.
utils_random_tpl.h
Contains useful methods for random stuff.
aGrUM
3.2.0
© PHW&CG&others - 2022
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