#[simd]Expand description
Run a SIMD-generic function body with the token’s target features enabled.
The first typed parameter after an optional self receiver is used as the
SIMD token carrier: a token, vector, mask, or a value implementing
fearless_simd::ExtractToken. The library must be in scope as fearless_simd;
for a renamed dependency, import it with use simd_backend as fearless_simd; in the
containing module. See the crate-level documentation for the complete
expansion, supported function forms, and semantic caveats.