1*4bdff4beSrobert //===----------------------------------------------------------------------===// 2*4bdff4beSrobert // 3*4bdff4beSrobert // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*4bdff4beSrobert // See https://llvm.org/LICENSE.txt for license information. 5*4bdff4beSrobert // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*4bdff4beSrobert // 7*4bdff4beSrobert //===----------------------------------------------------------------------===// 8*4bdff4beSrobert 9*4bdff4beSrobert #ifndef _LIBCPP___LIBCXX_DEBUG_RANDOMIZE_RANGE_H 10*4bdff4beSrobert #define _LIBCPP___LIBCXX_DEBUG_RANDOMIZE_RANGE_H 11*4bdff4beSrobert 12*4bdff4beSrobert #include <__config> 13*4bdff4beSrobert 14*4bdff4beSrobert #ifdef _LIBCPP_DEBUG_RANDOMIZE_UNSPECIFIED_STABILITY 15*4bdff4beSrobert # include <__algorithm/shuffle.h> 16*4bdff4beSrobert # include <__type_traits/is_constant_evaluated.h> 17*4bdff4beSrobert #endif 18*4bdff4beSrobert 19*4bdff4beSrobert #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 20*4bdff4beSrobert # pragma GCC system_header 21*4bdff4beSrobert #endif 22*4bdff4beSrobert 23*4bdff4beSrobert _LIBCPP_BEGIN_NAMESPACE_STD 24*4bdff4beSrobert 25*4bdff4beSrobert template <class _AlgPolicy, class _Iterator, class _Sentinel> 26*4bdff4beSrobert _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 __debug_randomize_range(_Iterator __first,_Sentinel __last)27*4bdff4beSrobertvoid __debug_randomize_range(_Iterator __first, _Sentinel __last) { 28*4bdff4beSrobert #ifdef _LIBCPP_DEBUG_RANDOMIZE_UNSPECIFIED_STABILITY 29*4bdff4beSrobert # ifdef _LIBCPP_CXX03_LANG 30*4bdff4beSrobert # error Support for unspecified stability is only for C++11 and higher 31*4bdff4beSrobert # endif 32*4bdff4beSrobert 33*4bdff4beSrobert if (!__libcpp_is_constant_evaluated()) 34*4bdff4beSrobert std::__shuffle<_AlgPolicy>(__first, __last, __libcpp_debug_randomizer()); 35*4bdff4beSrobert #else 36*4bdff4beSrobert (void)__first; 37*4bdff4beSrobert (void)__last; 38*4bdff4beSrobert #endif 39*4bdff4beSrobert } 40*4bdff4beSrobert 41*4bdff4beSrobert _LIBCPP_END_NAMESPACE_STD 42*4bdff4beSrobert 43*4bdff4beSrobert #endif // _LIBCPP___LIBCXX_DEBUG_RANDOMIZE_RANGE_H 44