turn intersection of vertex sets for
neighboring facets </li>
<li><a href="merge.c#vertexridges">qh_vertexridges</a>
return temporary set of ridges adjacent to a
vertex </li>
<li><a href="merge.c#vertexridges_facet">qh_vertexridges_facet</a>
add adjacent ridges for a vertex in facet </li>
</ul>

<h3><a href="qh-merge.htm#TOC">&#187;</a><a name="mcheck">functions for check and
trace</a></h3>
<ul>
<li><a href="merge.c#checkconnect">qh_checkconnect</a>
check that new facets are connected </li>
<li><a href="mer