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