Whether raw Block Scholes inputs fit Predict's pricing-safe envelope: a positive
spot and forward, forward <= max_spot and forward <= 100 * spot, and SVI
b, |rho|, |m|, and sigma within their bounds. a carries no bound of
its own: only total variance has to be positive (raw_var_ok), and every
downstream use of a fits its provider width.
Whether raw Block Scholes inputs fit Predict's pricing-safe envelope: a positive spot and forward,
forward <= max_spotandforward <= 100 * spot, and SVIb,|rho|,|m|, andsigmawithin their bounds.acarries no bound of its own: only total variance has to be positive (raw_var_ok), and every downstream use ofafits its provider width.