mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-07 15:03:34 +00:00
74 lines
2.6 KiB
C++
74 lines
2.6 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef _LIBCPP___ALGORITHM_RANGES_SAMPLE_H
|
|
#define _LIBCPP___ALGORITHM_RANGES_SAMPLE_H
|
|
|
|
#include <__algorithm/iterator_operations.h>
|
|
#include <__algorithm/sample.h>
|
|
#include <__algorithm/uniform_random_bit_generator_adaptor.h>
|
|
#include <__config>
|
|
#include <__iterator/concepts.h>
|
|
#include <__iterator/incrementable_traits.h>
|
|
#include <__iterator/iterator_traits.h>
|
|
#include <__random/uniform_random_bit_generator.h>
|
|
#include <__ranges/access.h>
|
|
#include <__ranges/concepts.h>
|
|
#include <__type_traits/remove_reference.h>
|
|
#include <__utility/forward.h>
|
|
#include <__utility/move.h>
|
|
|
|
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
|
|
# pragma GCC system_header
|
|
#endif
|
|
|
|
#if _LIBCPP_STD_VER >= 20
|
|
|
|
_LIBCPP_BEGIN_NAMESPACE_STD
|
|
|
|
namespace ranges {
|
|
namespace __sample {
|
|
|
|
struct __fn {
|
|
|
|
template <input_iterator _Iter, sentinel_for<_Iter> _Sent, weakly_incrementable _OutIter, class _Gen>
|
|
requires (forward_iterator<_Iter> || random_access_iterator<_OutIter>) &&
|
|
indirectly_copyable<_Iter, _OutIter> &&
|
|
uniform_random_bit_generator<remove_reference_t<_Gen>>
|
|
_LIBCPP_HIDE_FROM_ABI
|
|
_OutIter operator()(_Iter __first, _Sent __last,
|
|
_OutIter __out_first, iter_difference_t<_Iter> __n, _Gen&& __gen) const {
|
|
_ClassicGenAdaptor<_Gen> __adapted_gen(__gen);
|
|
return std::__sample<_RangeAlgPolicy>(
|
|
std::move(__first), std::move(__last), std::move(__out_first), __n, __adapted_gen);
|
|
}
|
|
|
|
template <input_range _Range, weakly_incrementable _OutIter, class _Gen>
|
|
requires (forward_range<_Range> || random_access_iterator<_OutIter>) &&
|
|
indirectly_copyable<iterator_t<_Range>, _OutIter> &&
|
|
uniform_random_bit_generator<remove_reference_t<_Gen>>
|
|
_LIBCPP_HIDE_FROM_ABI
|
|
_OutIter operator()(_Range&& __range, _OutIter __out_first, range_difference_t<_Range> __n, _Gen&& __gen) const {
|
|
return (*this)(ranges::begin(__range), ranges::end(__range),
|
|
std::move(__out_first), __n, std::forward<_Gen>(__gen));
|
|
}
|
|
|
|
};
|
|
|
|
} // namespace __sample
|
|
|
|
inline namespace __cpo {
|
|
inline constexpr auto sample = __sample::__fn{};
|
|
} // namespace __cpo
|
|
} // namespace ranges
|
|
|
|
_LIBCPP_END_NAMESPACE_STD
|
|
|
|
#endif // _LIBCPP_STD_VER >= 20
|
|
|
|
#endif // _LIBCPP___ALGORITHM_RANGES_SAMPLE_H
|