Crate matten_ndarray 

matten-ndarray — an experimental conversion bridge between matten::Tensor and ndarray::ArrayD<f64>.

This is a deliberately boring companion crate (RFC-025, RFC-027): it converts between the two owned representations and does nothing else. It adds no dependency to core matten, wraps none of the ndarray API, and exposes no view or lifetime types.

use matten::Tensor;
use matten_ndarray::{from_arrayd, to_arrayd};

let t = Tensor::new(vec![1.0, 2.0, 3.0, 4.0], &[2, 2]);
let arr = to_arrayd(&t).unwrap();
let back = from_arrayd(arr).unwrap();
assert_eq!(back.as_slice(), t.as_slice());

Status

Experimental (0.1.x). The API may change. Pin the version if you depend on it. Supported ndarray: the 0.16 minor.

Behavior

• Both conversions copy; no zero-copy is claimed.
• from_arrayd preserves logical element order even for non-standard (transposed / sliced) ArrayD inputs.
• from_arrayd rejects shapes with a zero-length axis (matten forbids zero-sized dimensions).
• With the dynamic feature, a dynamic tensor passed to to_arrayd returns MattenNdarrayError::DynamicTensor instead of panicking.

Enums

MattenNdarrayError

Errors produced by the matten ↔ ndarray conversions.

Functions

from_arrayd

Converts an ndarray::ArrayD<f64> into a Tensor.

to_arrayd

Converts a numeric Tensor into an ndarray::ArrayD<f64>.