word">const</span> Vecd &amp;n_i = n_[index_i];</div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;</div><div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;                Vecd force(0);</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;                <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> k = 0; k &lt; <a class="code" href="class_s_p_h_1_1_data_delegate_contact.html#a3f1efc9b0