> that C can express that Rust cannot The reverse is probably more true, though....

exDM69 · 2025-12-10T17:39:00 1765388340

> Rust has native SIMD support

std::simd is nightly only.

> while in standard C there is no way to express that.

In ISO Standard C(++) there's no SIMD.

But in practice C vector extensions are available in Clang and GCC which are very similar to Rust std::simd (can use normal arithmetic operations).

Unless you're talking about CPU specific intrinsics, which are available to in both languages (core::arch intrinsics vs. xmmintrin.h) in all big compilers.

ndiddy · 2025-12-10T12:53:26 1765371206

AFAIK std::simd is still nightly only. You can use the raw intrinsics in std::arch, but that's not any better than "#include <immintrin.h>".

kristianp · 2025-12-10T11:01:07 1765364467

So use the fairly common SIMD extensions in C, that's not much of an argument.