Function compute_q_star_idx 

pub fn compute_q_star_idx<C>(prime_cfgs: &[C]) -> usize
where
    C: BaseFieldConfig,

Compute the index of $q^* := \min$ in prime_cfgs (the family whose modulus is smallest).

prime_cfgs[0] is $q_0$ ($Q[X]$ family); prime_cfgs[1..=n] are $q_i$ ($F_q[X]$ families).

Panics

Panics if prime_cfgs is empty.