Expand description
Calculate mean square norm
Example
use radiorust::metering::level;
use radiorust::numbers::Complex;
let chunk = vec![
Complex::new(0.0, 0.0),
Complex::new(0.0, -0.5),
Complex::new(1.0, 0.0),
];
assert!(level(&chunk) - 0.41666667 < 0.001);