ndexing_vector</a>(aTb, idx.tail(n-np))-<a class="code" href="namespace_dem.html#ae66a43a80ec99faa99e8ab163cb5beae">indexing_row</a>(aTa, idx.tail(n-np))*x).maxCoeff(&amp;iMax);</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;                std::swap(idx[iMax+np], idx[np]);</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;                np++;</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;          