1//===----------------------------------------------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is dual licensed under the MIT and the University of Illinois Open 6// Source Licenses. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// UNSUPPORTED: libcpp-has-no-threads 11 12// <atomic> 13 14// template <class Integral> 15// Integral 16// atomic_fetch_and_explicit(volatile atomic<Integral>* obj, Integral op); 17// 18// template <class Integral> 19// Integral 20// atomic_fetch_and_explicit(atomic<Integral>* obj, Integral op); 21 22#include <atomic> 23#include <type_traits> 24#include <cassert> 25 26template <class T> 27void 28test() 29{ 30 { 31 typedef std::atomic<T> A; 32 A t; 33 std::atomic_init(&t, T(1)); 34 assert(std::atomic_fetch_and_explicit(&t, T(2), 35 std::memory_order_seq_cst) == T(1)); 36 assert(t == T(0)); 37 } 38 { 39 typedef std::atomic<T> A; 40 volatile A t; 41 std::atomic_init(&t, T(3)); 42 assert(std::atomic_fetch_and_explicit(&t, T(2), 43 std::memory_order_seq_cst) == T(3)); 44 assert(t == T(2)); 45 } 46} 47 48int main() 49{ 50 test<char>(); 51 test<signed char>(); 52 test<unsigned char>(); 53 test<short>(); 54 test<unsigned short>(); 55 test<int>(); 56 test<unsigned int>(); 57 test<long>(); 58 test<unsigned long>(); 59 test<long long>(); 60 test<unsigned long long>(); 61 test<wchar_t>(); 62#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 63 test<char16_t>(); 64 test<char32_t>(); 65#endif // _LIBCPP_HAS_NO_UNICODE_CHARS 66} 67