ate the possibility of bitwise serialization the type trait defined 
in the header
file <a href="../../../boost/serialization/is_bitwise_serializable.hpp" target="is_bitwise_serializable">is_bitwise_serializable.hpp</a>
is used:
<pre><code>
namespace boost { namespace serialization {
    template<class T>
    struct is_bitwise_serializable
     : public is_arithmetic<T>
    {};
} }
</code></pre>
is used, and can be specialized for other classes. The specialization
is made easy by the corresponding macro:
<p