</span><span class="special">&lt;</span><span class="keyword">typename</span> Integral<span class="special">&gt;</span> <span class="keyword">struct</span> <a class="link" href="../../../boost/icl/is_numeric_boo_idp41941312.html" title="Struct template is_numeric&lt;boost::rational&lt; Integral &gt;&gt;">is_numeric</a><span class="special">&lt;</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">rational</span><span class="special">&lt;</span> <span class="iden