<span class="identifier">math</span><span class="special">{</span>

<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">T</span><span class="special">&gt;</span>
<span class="keyword">class</span> <span class="identifier">quaternion</span>
<span class="special">{</span>
<span class="keyword">public</span><span class="special">:</span>

   <span class="keyword">typedef</span> <span class="identifier">T</span> <a class="link" hre