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 // UNSUPPORTED: c++03, c++11, c++14 10 11 // to_chars requires functions in the dylib that have not been introduced in older 12 // versions of the dylib on macOS. 13 // XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}} 14 15 // steady_clock requires threads. 16 // UNSUPPORTED: libcpp-has-no-threads 17 // UNSUPPORTED: libcpp-has-no-random-device 18 // UNSUPPORTED: libcpp-has-no-localization 19 20 // XFAIL: LIBCXX-AIX-FIXME 21 22 // <charconv> 23 24 #include <type_traits> 25 26 // Work-around for sprintf_s's usage in the Microsoft tests. 27 #ifndef _WIN32 28 # define sprintf_s snprintf 29 #endif 30 31 #ifdef _MSVC_STL_VERSION 32 #include <xutility> 33 using std::_Bit_cast; 34 #else 35 // FUNCTION TEMPLATE _Bit_cast 36 template <class _To, class _From, 37 std::enable_if_t<sizeof(_To) == sizeof(_From) && std::is_trivially_copyable_v<_To> && 38 std::is_trivially_copyable_v<_From>, 39 int> = 0> 40 [[nodiscard]] constexpr _To _Bit_cast(const _From& _From_obj) noexcept { 41 return __builtin_bit_cast(_To, _From_obj); 42 } 43 #endif 44 45 // Includes Microsoft's test that tests the entire header. 46 47 #include "test.cpp" 48