Function decode_radix 

pub fn decode_radix(val: Vec<u64>, basis: u64) -> u64

use concrete_integer::wopbs::{decode_radix, encode_radix};

let val = 11;
let basis = 2;
let nb_block = 5;
assert_eq!(val, decode_radix(encode_radix(val, basis, nb_block), basis));