="programlisting"><span class="identifier">d</span> <span class="special">=</span> <span class="number">3.14</span><span class="special">;</span>  <span class="comment">// Error implicit conversion from double not allowed.</span>
<span class="identifier">d</span> <span class="special">=</span> <span class="keyword">static_cast</span><span class="special">&lt;</span><span class="identifier">mp</span><span class="special">::</span><span class="identifier">int512_t</span><span class="special">&gt;(</span><span