Function entropy 

pub fn entropy<F: Float + FromPrimitive>(data: &[u8]) -> F

Calculates the Shannon entropy of a byte slice.

Shannon entropy measures the average information content per byte, ranging from 0 (completely uniform) to 8 (maximum randomness).

Arguments

• data - A byte slice to analyze

Returns

The entropy value in bits per byte (0.0 to 8.0)

Example

Calculating entropy of a Vec

use shannon::entropy;

let uniform_data = vec![0u8; 100];
let e: f64 = entropy(&uniform_data);
assert_eq!(e, 0.0);

Calculating entropy per character of a String

use shannon::entropy;

let text = String::from("AABB");
let e: f64 = entropy(text.as_bytes());
assert_eq!(e, 1.0);