pub fn compute_vix(
near_term: &OptionsByExpiryDate,
next_term: &OptionsByExpiryDate,
near_term_risk_free_rate: f64,
next_term_risk_free_rate: f64,
now: NaiveDateTime,
) -> Percentagepub fn compute_vix(
near_term: &OptionsByExpiryDate,
next_term: &OptionsByExpiryDate,
near_term_risk_free_rate: f64,
next_term_risk_free_rate: f64,
now: NaiveDateTime,
) -> Percentage