Implement co-broadcasting

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
38/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Stale
Tech stack
rust
Domain
data

Research direction

Start with the internal co_broadcast function referenced in #898 and read the linked NumPy broadcasting documentation. Trace how arithmetic operations use it, then define the public interface for broadcasting inputs to a common shape. Done means the existing internal capability is available externally for arithmetic operations.

Written by the indexing model from the issue text.

Description

broadcast

See http://docs.scipy.org/doc/numpy-1.10.1/user/basics.broadcasting.html

A more general form of broadcasting, it's like two-sided broadcasting, broadcast to a common shape that's not the same as either left or right shape.

In #898 - internal function co_broadcast, but available externally for arithmetic ops.

Make available as a public interface.

Dominant language
Rust
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