>// include exception policies</span>

<span class="keyword">using</span> <span class="identifier">safe_t</span> <span class="special">=</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">safe_numerics</span><span class="special">::</span><span class="identifier">safe</span><span class="special">&lt;</span>
    <span class="keyword">int</span><span class="special">,</span>
    <span class="identifier">boost</span><span class="special">::</span><span class="id