//! Implied volatility extraction from option prices.
//!
//! Provides three models for extracting implied volatility:
//!
//! - [`BlackImpliedVol`] — Standard Black (lognormal) model via Jäckel's algorithm
//! - [`NormalImpliedVol`] — Bachelier (normal) model for fixed income / short-dated FX
//! - [`DisplacedImpliedVol`] — Displaced diffusion hybrid (interpolates normal ↔ Black)
pub use ;
pub use ;
pub use ;