experimental/algorithm
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// <experimental/algorithm> -*- C++ -*-
// Copyright (C) 2014-2023 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, 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 General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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/** @file experimental/algorithm
* This is a TS C++ Library header.
* @ingroup libfund-ts
*/
#ifndef _GLIBCXX_EXPERIMENTAL_ALGORITHM
#define _GLIBCXX_EXPERIMENTAL_ALGORITHM 1
#pragma GCC system_header
#include <bits/requires_hosted.h> // experimental is currently omitted
#if __cplusplus >= 201402L
#include <algorithm>
#include <experimental/bits/lfts_config.h>
#include <experimental/random>
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
namespace experimental
{
inline namespace fundamentals_v2
{
template<typename _ForwardIterator, typename _Searcher>
inline _ForwardIterator
search(_ForwardIterator __first, _ForwardIterator __last,
const _Searcher& __searcher)
{ return __searcher(__first, __last); }
#define __cpp_lib_experimental_sample 201402
/// Take a random sample from a population.
template<typename _PopulationIterator, typename _SampleIterator,
typename _Distance, typename _UniformRandomNumberGenerator>
_SampleIterator
sample(_PopulationIterator __first, _PopulationIterator __last,
_SampleIterator __out, _Distance __n,
_UniformRandomNumberGenerator&& __g)
{
using __pop_cat = typename
std::iterator_traits<_PopulationIterator>::iterator_category;
using __samp_cat = typename
std::iterator_traits<_SampleIterator>::iterator_category;
static_assert(
__or_<is_convertible<__pop_cat, forward_iterator_tag>,
is_convertible<__samp_cat, random_access_iterator_tag>>::value,
"output range must use a RandomAccessIterator when input range"
" does not meet the ForwardIterator requirements");
static_assert(is_integral<_Distance>::value,
"sample size must be an integer type");
typename iterator_traits<_PopulationIterator>::difference_type __d = __n;
return _GLIBCXX_STD_A::
__sample(__first, __last, __pop_cat{}, __out, __samp_cat{}, __d,
std::forward<_UniformRandomNumberGenerator>(__g));
}
template<typename _PopulationIterator, typename _SampleIterator,
typename _Distance>
inline _SampleIterator
sample(_PopulationIterator __first, _PopulationIterator __last,
_SampleIterator __out, _Distance __n)
{
return experimental::sample(__first, __last, __out, __n,
_S_randint_engine());
}
template<typename _RandomAccessIterator>
inline void
shuffle(_RandomAccessIterator __first, _RandomAccessIterator __last)
{ return std::shuffle(__first, __last, _S_randint_engine()); }
} // namespace fundamentals_v2
} // namespace experimental
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std
#endif // C++14
#endif // _GLIBCXX_EXPERIMENTAL_ALGORITHM