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//===----------------------------------------------------------------------===//
//
// 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___LIBCXX_DEBUG_RANDOMIZE_RANGE_H
#define _LIBCPP___LIBCXX_DEBUG_RANDOMIZE_RANGE_H
#include <__config>
#ifdef _LIBCPP_DEBUG_RANDOMIZE_UNSPECIFIED_STABILITY
# include <__algorithm/shuffle.h>
# include <__type_traits/is_constant_evaluated.h>
#endif
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _AlgPolicy, class _Iterator, class _Sentinel>
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14
void __debug_randomize_range(_Iterator __first, _Sentinel __last) {
#ifdef _LIBCPP_DEBUG_RANDOMIZE_UNSPECIFIED_STABILITY
# ifdef _LIBCPP_CXX03_LANG
# error Support for unspecified stability is only for C++11 and higher
# endif
if (!__libcpp_is_constant_evaluated())
std::__shuffle<_AlgPolicy>(__first, __last, __libcpp_debug_randomizer());
#else
(void)__first;
(void)__last;
#endif
}
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___LIBCXX_DEBUG_RANDOMIZE_RANGE_H
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