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improve Atomic*::fetch_update docs #49916

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Apr 14, 2018
Merged

improve Atomic*::fetch_update docs #49916

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4 changes: 2 additions & 2 deletions src/libcore/sync/atomic.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1425,8 +1425,8 @@ assert_eq!(foo.load(Ordering::SeqCst), 0b011110);

doc_comment! {
concat!("Fetches the value, and applies a function to it that returns an optional
new value. Returns a `Result` (`Ok(_)` if the function returned `Some(_)`, else `Err(_)`) of the
previous value.
new value. Returns a `Result` of `Ok(previous_value)` if the function returned `Some(_)`, else
`Err(previous_value)`.

Note: This may call the function multiple times if the value has been changed from other threads in
the meantime, as long as the function returns `Some(_)`, but the function will have been applied
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