Merges vertices whose three coordinates have identical bits (so 0 and
-0 stay apart, and a NaN only merges with the same NaN bits). Exact: no
coordinate changes, so the walk computes the same bits as before.
Vertices keep the order of their first appearance.
Merges vertices whose three coordinates have identical bits (so
0and-0stay apart, and a NaN only merges with the same NaN bits). Exact: no coordinate changes, so the walk computes the same bits as before. Vertices keep the order of their first appearance.