//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17
// XFAIL: !has-64-bit-atomics
// operator floating-point-type() volatile noexcept;
// operator floating-point-type() noexcept;
#include <atomic>
#include <cassert>
#include <concepts>
#include <type_traits>
#include "test_helper.h"
#include "test_macros.h"
template <class T, template <class> class MaybeVolatile = std::type_identity_t>
void test_impl() {
// Uncomment the test after P1831R1 is implemented
// static_assert(std::is_convertible_v<volatile std::atomic<T>&, T> == std::atomic<T>::is_always_lock_free);
static_assert(noexcept(T(std::declval<MaybeVolatile<std::atomic<T>>&>())));
// operator float
{
MaybeVolatile<std::atomic<T>> a(T(3.1));
T r = a;
assert(r == T(3.1));
}
// memory_order::seq_cst
{
auto store = [](MaybeVolatile<std::atomic<T>>& x, T, T new_val) { x.store(new_val); };
auto op_float = [](MaybeVolatile<std::atomic<T>>& x) -> T { return x; };
test_seq_cst<T, MaybeVolatile>(store, op_float);
}
}
template <class T>
void test() {
test_impl<T>();
if constexpr (std::atomic<T>::is_always_lock_free) {
test_impl<T, std::add_volatile_t>();
}
}
int main(int, char**) {
test<float>();
test<double>();
// TODO https://github.com/llvm/llvm-project/issues/47978
// test<long double>();
return 0;
}