pub const NEGLIGIBLE_PIECE_REL: f64 = 1e-9;Expand description
A piece whose volume is below this fraction of the whole is dropped.
The kernel can return a few slivers where two zone boxes share a boundary plane, and a piece of a nanolitre is not a piece: it is noise a user would have to identify and delete by hand. Matches the intent of the apportionment path’s own negligible-share threshold, one level up.