makepad/libs/rapier/vendor/wide/README.md
Admin 630577cb98 rapier: restore simd-stable (vendor wide + safe_arch), retest vs box3d
Re-vendors wide 0.7 + safe_arch, restores the upstream simd-stable
wiring in rapier3d/parry3d manifests and the cfg-simd source, and drops
the added 'stripped build does not support SIMD' guards (upstream's
simd-vs-enhanced-determinism exclusivity guard kept).

Interleaved single-thread retest (min of 4): SIMD buys rapier 1.8-2.2x;
box3d vs rapier-simd is now near parity — large_pyramid 1579 vs 1638 ms,
joint_grid 957 vs 1008 ms (box3d ahead), many_pyramids 2389 vs 1970 ms
(rapier ahead). box3d README grid updated with the honest three-column
table; box3d keeps cross-arch determinism + zero deps at that speed.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-05 14:17:26 +02:00

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[![License:Zlib](https://img.shields.io/badge/License-Zlib-brightgreen.svg)](https://opensource.org/licenses/Zlib)
![Minimum Rust Version](https://img.shields.io/badge/Min%20Rust-1.61-green.svg)
[![crates.io](https://img.shields.io/crates/v/wide.svg)](https://crates.io/crates/wide)
[![docs.rs](https://docs.rs/wide/badge.svg)](https://docs.rs/wide/)
# wide
A crate to help you go wide.
Specifically, this has portable "wide" data types that do their best to be SIMD when possible.
On `x86`, `x86_64`, `wasm32` and `aarch64 neon` this is done with explicit
intrinsic usage (via [safe_arch](https://docs.rs/safe_arch)), and on other
architectures this is done by carefully writing functions so that LLVM hopefully
does the right thing. When Rust stabilizes more explicit intrinsics then they
can go into `safe_arch` and then they can get used here.