safe_arch

Exposes arch-specific intrinsics as safe function (via cfg).

I don't like putting too much in the Readme and also in the crate docs, it can get out of sync. Just see the crate docs for more details.

• Minimum Rust: The CI tests the crate against Stable 1.43.0. The doc-tests are known to require at least 1.43 because they use u32::MAX, f32::NAN, and similar short names for the common consts. You can probably build the crate without the doc tests on older compiler versions, possibly as far back as 1.31, but that's not officially supported.