Add as_array to SimdValue?

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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
performance

Research direction

Start at the SimdValue trait and inspect its implementations, especially AutoSimd<T; N>, primitive types, num_complex::Complex, std::simd-based values, and wide-based values. Compare how each currently exposes its backing array or reference, then verify that generic code can call the new trait operation for every implementation and that the existing project checks pass.

Written by the indexing model from the issue text.

Description

Often it would be convenient to be able to cast the entire SIMD value to an array reference instead of extracting lanes one by one, in a generic code over any SimdValue.

As far as I can tell, all implementations of SimdValue should be able to support this - AutoSimd<[T; N]> has array easily accessed via .0, primitives can be casted via std::slice::from_ref, num_complex::Complex has repr(C) compatible with [T; 2], std::simd-based implementation has its own as_array, and wide-based implementation has as_array_ref.

With that in mind, can we add as_array to SimdValue trait itself to make writing generic code easier?

Dominant language
Rust
Stars
348
Forks
38
No merged PRs in 30d

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