Module scalar 

The pricing scalar: which AD modes this crate prices in, and how stored passive parameters are lifted into one.

Storage holds f64. A view holds the mode’s scalar. For the passive mode those are the same type and the view should borrow the stored slice; for every active mode it must own a converted copy. Rust cannot express that choice generically — &[f64] and &[R] unify only when R = f64 — so the decision is made once per mode here, behind one method.

This is what keeps the value-only path free of a per-curve allocation while the same code serves every active mode.

Macros

impl_owning_lift 🔒

Stamp an owning lift for an active mode. Each converts through From<f64>, which is where a reverse-mode scalar acquires its (as yet unregistered) slot and a forward-mode dual its zero tangent.

Traits

LiftParams

A pricing mode that stored f64 parameters can be lifted into.

Scalar

The bound every pricing body in this crate is written against.