Function align_value

test/test_alignment.cpp:32–39

template <size_t Alignment, typename T>
constexpr T align_value(T value) {
    constexpr auto alignment {static_cast<T>(Alignment)};

    value += alignment - 1;
    value &= ~(alignment - 1);

    return value;
}

#if (defined _MSC_VER)
constexpr bool is_cl_or_clang_cl = true;