Use std::arch for SIMD and target_feature

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Assessment

Difficulty
5/5
Estimated time
Over a week
Newbie friendliness
20/100
Issue type
Refactor
Clarity
Needs clarification
Activity status
Stale
Tech stack
rust
Domain
performance

Research direction

Start by reading rust-lang/rust issue 29717, then locate the implementations for the unrolled dot product and scalar sum in ndarray. Determine how std::arch and target_feature should select their implementations; done means the requested selection works for both operations without changing their results.

Written by the indexing model from the issue text.

Description

See rust-lang/rust/issues/29717

Use to select impl for unrolled dot product and scalar sum.

Dominant language
Rust
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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

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