fn lzc<T: std::ops::Shl::<Output = T> + From::<u8> + std::cmp::PartialEq + std::ops::BitAnd<Output = T> + Copy>(mut x: T) -> u8 {
    let n: u8 = (size_of::<T>() * 8) as u8;
    let first_bit: T = T::from(1_u8) << T::from(n - 1);

    if x == T::from(0_u8) {
        return n;
    }

    let mut cnt: u8 = 0;

    while (x & first_bit) == T::from(0_u8) {
        cnt += 1;

        x = x << T::from(1_u8);
    }

    return cnt;
}