Issue with std::atomic

Trying to run some multi threaded bit of code and clang llvm compiler complains that std::atomic<double>::compare_exchange_weak() does not have the correct number of arguments. Can anyone please help?

thanks Amine

static std::atomic<int> counter(0);
std::atomic<double> x = {0.0000000003};


template class std::vector<double>;

struct TestVector
{
    std::vector<double> Vect;
    explicit TestVector(std::size_t n) : Vect(std::vector<double>(n))
    {
        for(auto i = 0; i< Vect.size(); ++i)
        {
            Vect[i] = std::cos(i*M_PI/2.0);
        }
    }
};

const TestVector Z(30000);

void TestOnAtomics()
{
    int j { 0};
    double y = (Z.Vect)[j] + 0.00000005;
    const double u = 1.22222222;
    while(!(x.compare_exchange_weak(y,u)) && j<((Z.Vect).size() - 1))
    {
        ++counter;
        x.store(std::move((Z.Vect)[j]), std::memory_order::memory_order_seq_cst);
        ++j;
        std::cout << "\nMy value is " << x << " and that of y is: " << y << "\n";
        y = (Z.Vect)[j];
    };
}