an> <span class="identifier">truncl</span><span class="special">(</span><span class="keyword">long</span> <span class="keyword">double</span> <span class="identifier">x</span><span class="special">);</span>

<span class="special">}}}}</span> <span class="comment">// namespaces</span>
</pre>
<h5>
<a name="math_toolkit.extern_c.tr1.h2"></a>
        <span class="phrase"><a name="math_toolkit.extern_c.tr1.supported_tr1_functions"></a></span><a class="link" href="tr1.html#math_toolkit.extern_c.tr1.supported_tr1_