in benches/benches.rs [208:224]
fn scale_values(&self, ns: f64, values: &mut [f64]) -> &'static str {
let (factor, unit) = if ns < 10f64.powi(3) {
(10f64.powi(0), " ns")
} else if ns < 10f64.powi(6) {
(10f64.powi(-3), " µs")
} else if ns < 10f64.powi(9) {
(10f64.powi(-6), " ms")
} else {
(10f64.powi(-9), " s")
};
for val in values {
*val *= factor;
}
unit
}