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    /// Get the number of qubits needed to represent a number.
    ///
    /// Equivilent to ceil(log2(n))s
    pub fn get_width(n: i32) -> i32 {
        ((n as f32) + 1.0).log2().ceil() as i32
    }

    /// Calculate the greatest common divisor (Euclid's algorithm)
    pub fn gcd(mut a: i32, mut b: i32) -> i32 {
        while b != 0 {
            let tmp = a;
            a = b;
            b = tmp % b;
        }
        a
    }

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