 facet into another simplicial
facet </li>
<li><a href="merge.c#mergevertex_del">qh_mergevertex_del</a>
delete a vertex due to merging one facet into
another facet </li>
<li><a href="merge.c#mergevertex_neighbors">qh_mergevertex_neighbors</a>
merge the vertex neighbors of two facets </li>
<li><a href="merge.c#mergevertices">qh_mergevertices</a>
merge the vertex sets of two facets </li>
<li><a href="merge.c#newvertices">qh_newvertices</a>
register all vertices as new vertices </li>
<li><a href="merge.c#updat