Expand description
ferro_ta_core — Pure Rust indicator library.
This crate contains all indicator implementations as pure functions operating
on &[f64] slices and returning Vec<f64>. It has no dependency on PyO3
or numpy so it can be used from any Rust project, or compiled to WASM /
Node.js via napi-rs without dragging in Python bindings.
The Python wheel (ferro_ta PyPI package) is built from a thin binding crate
that calls into this core and converts NumPy arrays to/from Rust slices.
§Two-layer architecture
The root crate (ferro_ta) contains PyO3 #[pyfunction] wrappers that convert
numpy arrays to &[f64] and delegate to this core crate.
§Usage (Rust)
use ferro_ta_core::overlap;
let close = vec![1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0];
let sma = overlap::sma(&close, 3);
assert!(sma[0].is_nan());
assert!((sma[2] - 2.0).abs() < 1e-10);