Dot product with complex numbers

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
30/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
rust
Domain
data

Research direction

Start with the dot() entry point and reproduce the issue using the Complex::new example in the report. Check the intended dot-product semantics for complex values, then determine whether the observed result is incorrect or expected. Done means the behavior is resolved or clearly documented, with verification for the reported example.

Written by the indexing model from the issue text.

Description

It looks that dot() function gives wrong result when used with complex numbers:

What I would expect:

let xs = Array::from_vec(vec![Complex::new(1., 1.), Complex::new(3., -1.)]);
assert!(xs.dot(&xs) == 12.);

What I get:

Complex { re: 8, im: -4 }

Dot product should never be a complex number.
Is this bug or this function means something else?

Dominant language
Rust
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Forks
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