Function hotspot_score 

pub fn hotspot_score(churn: f64, complexity: f64) -> f64

Hotspot score: churn × complexity, the combined ranking signal.

Rank files by this combination, not by either churn or complexity alone — the underlying research consistently associates the combination with elevated defect rates and maintenance cost. A hotspot ranking is a prioritization signal, not an automatic verdict; investigate top-ranked files with human judgement before acting.

Arguments

• churn — a file’s code churn over the analysis window (see code_churn).
• complexity — a complexity measure for the same file (chapter 4.1).

Returns

The hotspot score (higher indicates a stronger hotspot candidate).

Examples

use software_engineering::code_churn::hotspot_score;

// "rank files by the combination, commonly the product of churn and
// complexity, rather than by either metric alone."
assert_eq!(hotspot_score(420.0, 12.0), 5_040.0);