Function py_imply_vol_and_greeks 

pub fn py_imply_vol_and_greeks(
    s: f64,
    r: f64,
    b: f64,
    is_call: bool,
    k: f64,
    t: f64,
    price: f64,
    db_dr: f64,
) -> PyResult<BlackScholesGreeksResult>

Computes implied volatility and greeks using the fast implementations. This function uses compute_greeks after implying volatility.

db_dr is zero for fixed carry and one for carry defined as r - q, including r == q. Rho is per percentage point. The exact implementation is used when the fast kernel cannot reprice the solved premium within 0.01 percent.

Errors

Returns an error if:

• Model inputs or the premium are invalid.
• The premium has no finite positive implied volatility.
• Results are nonfinite, inconsistent, or fail the 0.01 percent repricing tolerance.