Constant PLACEMENT_ROUNDING 

pub const PLACEMENT_ROUNDING: &str = "rounding of applying the transform in f64";

The DeviationContribution::detail of DeviationPath::Placement: the rounding of applying an instance’s transform to its source’s vertices in f64 (#295), PLACEMENT_EPSILONS f64::EPSILON of the largest coordinate magnitude the placement sums (see the module’s “Placement rounding”). Every other contribution of the instance is grown by it too.