linebender/fearless_simd

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Stars: 457
Forks: 30
Open beginner issues: 0
Indexed issues: 27
Avg merge: 1d 10h
Merged PRs (30d): 25

Dominant language: Rust
License: Apache-2.0
Last GitHub push: Sep 15, 2026
Latest indexed: Sep 19, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

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26 open issues indexed

SSE 2: Extremely slow floating-point `trunc`/`floor`/`ceil`/`round_ties_even`/`fract` Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

linebender/fearless_simd#381 · 3 comments · Opened Sep 18, 2026
Iterators conflict with any kind of multiversioning (not just in fearless_simd) Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

linebender/fearless_simd#380 · 2 comments · Opened Sep 17, 2026
`#[simd]` should work on functions without an explicit SIMD token parameter Open

Difficulty 4/5 3-5 days Newbie friendliness 58/100

linebender/fearless_simd#379 · Opened Sep 16, 2026
v1.0 release checklist Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

linebender/fearless_simd#368 · 6 comments · Opened Sep 6, 2026
missing APIs vs std::simd Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

linebender/fearless_simd#355 · Opened Aug 27, 2026
swizzle_dyn with non-matching table/indexes sizes Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

linebender/fearless_simd#353 · 3 comments · Opened Aug 27, 2026
vectorize() + #[inline(always)] is error-prone and hard to teach Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

linebender/fearless_simd#338 · 4 comments · Opened Aug 18, 2026
Test helper macros for downstream users? Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

linebender/fearless_simd#332 · 1 comment · Opened Aug 15, 2026
Add a description in repository (not README) Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

linebender/fearless_simd#328 · Opened Aug 15, 2026
Optimize 4-way interleaved load/store on x86 Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

linebender/fearless_simd#305 · Opened Aug 4, 2026
rustc codegen issue tracker Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

linebender/fearless_simd#281 · 1 comment · 1 reaction · Opened Jul 24, 2026
Optimize AVX2 vector shifts once rustc codegen bugs are fixed Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

linebender/fearless_simd#280 · Opened Jul 24, 2026
Convert unit tests into generated doctests Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

linebender/fearless_simd#267 · Opened Jul 6, 2026
`dispatch!` is expensive Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

linebender/fearless_simd#194 · 6 comments · Opened Feb 3, 2026
Add more assertion helpers for floating-point tests Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

linebender/fearless_simd#174 · Opened Dec 17, 2025
Set up Miri tests in CI Open

Difficulty 3/5 1-2 days Newbie friendliness 58/100

linebender/fearless_simd#173 · 2 comments · Opened Dec 17, 2025
Stop exposing "shift by vector" via operator overloading? Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

linebender/fearless_simd#163 · 1 comment · Opened Dec 12, 2025
Weird x86 feature detection considerations Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

linebender/fearless_simd#157 · Opened Dec 8, 2025
Remove the `libm` dependency and inline the functions we use? Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

linebender/fearless_simd#147 · 1 comment · 2 reactions · Opened Nov 28, 2025
Expose `Level::new()` on `no_std`? Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

linebender/fearless_simd#117 · 5 comments · Opened Nov 12, 2025
Snapshot tests for the assembly output Open

linebender/fearless_simd#100 · 1 comment · 6 reactions · 1 assignee · Opened Oct 3, 2025
Figure out why build errors in `no_std` are not detected Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

linebender/fearless_simd#65 · Opened Aug 19, 2025
Capitalize CI Step names Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

linebender/fearless_simd#44 · Opened Jul 30, 2025
Tracking burning down clippy issues Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

linebender/fearless_simd#40 · Opened Jul 23, 2025
Shuffle/swizzle operations Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

linebender/fearless_simd#29 · 8 comments · Opened Jul 9, 2025
Fun, safe math considerations Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

linebender/fearless_simd#4 · 6 comments · Opened Jun 9, 2025

linebender/fearless_simd

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