Crate reducers 

Rust-backed reductions for NumPy arrays (plain + NaN-aware).

The kernel modules (finite, parallel, reducers_1d, axis) are pure Rust with no PyO3/NumPy dependency. The PyO3 extension (reducers._core) is compiled only with the python / extension-module feature.

Rust usage

use reducers::{reducers_1d, ScanPolicy};

let v = [1.0_f64, 2.0, f64::NAN, 4.0];
// NaN-aware mean (np.nanmean parity: skip NaN, keep inf):
assert_eq!(reducers_1d::mean(&v, ScanPolicy::SkipNan), 7.0 / 3.0);
// Plain mean propagates NaN (np.mean):
assert!(reducers_1d::mean(&v, ScanPolicy::AllValues).is_nan());
// Finite-only (ignore inf too):
let w = [1.0_f64, f64::INFINITY, 3.0];
assert_eq!(reducers_1d::mean(&w, ScanPolicy::SkipNonFinite), 2.0);

Re-exports

pub use finite::Float;

pub use finite::ScanPolicy;

Modules

axis

Axis reductions for normalized 2-D inputs.

finite

Float trait and scan policy shared by all reducer kernels.

parallel

Rayon grain controls, overridable via environment variables.

reducers_1d

1-D reducer kernels, parameterized by ScanPolicy.