</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;            <span class="keyword">call </span>errmgr%report_error(<span class="stringliteral">&quot;compute_poincare_section&quot;</span>, &amp;</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;                <span class="stringliteral">&quot;The sampling period must be a positive value larger &quot;</span> // &amp;</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</