pan class="special">::</span><span class="identifier">numeric_limits</span><span class="special">&lt;</span><span class="identifier">UnsignedInt</span><span class="special">&gt;::</span><span class="identifier">is_integer</span><span class="special">,</span> <span class="string">"Template argument UnsignedInt must be an integer."</span><span class="special">);</span>
   <span class="identifier">BOOST_STATIC_ASSERT_MSG</span><span class="special">(!</span><span class="identifier">std</span><span class="speci