hpp</a></span>&gt;</p>
<pre>namespace boost
{
    namespace <span class="RenoLink"><a href="qvm.html">qvm</a></span>
    {
<span class="RenoIncludeSPAN">        //Only <span class="RenoLink"><a href="SFINAE_enable_if.html">enabled if</a></span>: <span class="RenoLink"><a href="is_quat.html">is_quat</a></span>&lt;A&gt;::value
        template &lt;class A&gt;
        void <span class="RenoLink">set_zero</span>( A &amp; a );</span>
    }
}</pre>
</div><h4>Effects:</h4>
<p>As if</p>
<pre><span class