Module stats 

Pure helpers used by super::ProviderMetrics::all_snapshots.

Kept in their own file so the orchestration code in metrics.rs stays small and readable.

Functions

mean

Arithmetic mean of values. Returns 0.0 for empty input.

percentile

Return the value at the (n * pct) as usize index of sorted_values, or 0.0 if out of bounds. Inputs must be pre-sorted ascending.

sort_f64

Sort a Vec<f64> ascending, treating NaN as equal. Pure utility so the unwrap-on-ordering pattern only appears here.