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<div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;    <span class="keywordtype">pure</span> <span class="keywordtype">elemental</span> <span class="keyword">function </span>lu_gre(normal, viscous, kz, bz, velocity, z, dzdt) <span class="keyword">result</span>(f)</div>
<div class="line"><a name="l00370"></a><span class="lineno"><a class="line" href="namespacefriction.html#afd5ded9b2d328825618e198af0675f17">  370</a></span>&#160;        <span class="