@alice_i_cecile @Mara have 128bit atomics landed in Rust yet?
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@alice_i_cecile @Mara okay, so, for posterity, signs point to "yes, but they're not documented" https://github.com/rust-lang/rust/blob/19bc8fb05ab083a315ee4285b4df7822e8bb1e24/library/core/src/sync/atomic.rs#L2860-L2899
