diff options
| -rw-r--r-- | src/libcore/atomic.rs | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/src/libcore/atomic.rs b/src/libcore/atomic.rs index c316236a804..056b97ea2da 100644 --- a/src/libcore/atomic.rs +++ b/src/libcore/atomic.rs @@ -252,7 +252,8 @@ impl AtomicBool { /// Stores a value into the bool if the current value is the same as the expected value. /// - /// If the return value is equal to `old` then the value was updated. + /// The return value is always the previous value. If it is equal to `old`, then the value was + /// updated. /// /// `swap` also takes an `Ordering` argument which describes the memory ordering of this /// operation. @@ -489,7 +490,8 @@ impl AtomicIsize { /// Stores a value into the isize if the current value is the same as the expected value. /// - /// If the return value is equal to `old` then the value was updated. + /// The return value is always the previous value. If it is equal to `old`, then the value was + /// updated. /// /// `compare_and_swap` also takes an `Ordering` argument which describes the memory ordering of /// this operation. @@ -676,7 +678,8 @@ impl AtomicUsize { /// Stores a value into the usize if the current value is the same as the expected value. /// - /// If the return value is equal to `old` then the value was updated. + /// The return value is always the previous value. If it is equal to `old`, then the value was + /// updated. /// /// `compare_and_swap` also takes an `Ordering` argument which describes the memory ordering of /// this operation. @@ -873,7 +876,8 @@ impl<T> AtomicPtr<T> { /// Stores a value into the pointer if the current value is the same as the expected value. /// - /// If the return value is equal to `old` then the value was updated. + /// The return value is always the previous value. If it is equal to `old`, then the value was + /// updated. /// /// `compare_and_swap` also takes an `Ordering` argument which describes the memory ordering of /// this operation. |