loat</span> xsum = 0.0, 
<a name="l00144"></a>00144                   ysum = 0.0,
<a name="l00145"></a>00145                   zsum = 0.0 ;
<a name="l00146"></a>00146 
<a name="l00147"></a>00147         <span class="keywordflow">if</span>(latoms) {
<a name="l00148"></a>00148                 <span class="keywordtype">int</span> i ;
<a name="l00149"></a>00149                 <span class="keywordflow">for</span>(i = 0 ; i &lt; natoms ; i++) {
<a name="l00150"></a>00150                         xsum += latoms[i]