std::atomic_ref<T>::operator+=,-=,&=,|=,^=
member only of atomic_ref<Integral> and atomic_ref<Floating> template specializations |
||
T operator+=( T arg ) const noexcept; |
(1) | |
member only of atomic_ref<T*> template specialization |
||
T* operator+=( std::ptrdiff_t arg ) const noexcept; |
(1) | |
member only of atomic_ref<Integral> and atomic_ref<Floating> template specializations |
||
T operator-=( T arg ) const noexcept; |
(1) | |
member only of atomic_ref<T*> template specialization |
||
T* operator-=( std::ptrdiff_t arg ) const noexcept; |
(1) | |
member only of atomic_ref<Integral> template specialization |
||
T operator&=( T arg ) const noexcept; |
(3) | |
T operator|=( T arg ) const noexcept; |
(4) | |
T operator^=( T arg ) const noexcept; |
(5) | |
Atomically replaces the current value of the referenced object with the result of computation involving the previous value and arg
. These operations are read-modify-write operations.
For signed integral types, arithmetic is defined to use two’s complement representation. There are no undefined results.
For floating-point types, the floating-point environment in effect may be different from the calling thread's floating-point environment. The operation need not be conform to the corresponding std::numeric_limits traits but is encouraged to do so. If the result is not a representable value for its type, the result is unspecified but the operation otherwise has no undefined behavior.
For T*
types, the result may be an undefined address, but the operations otherwise have no undefined behavior. The program is ill-formed if T
is not an object type.
Contents |
[edit] Parameters
arg | - | the argument for the arithmetic operation |
[edit] Return value
The resulting value (that is, the result of applying the corresponding binary operator to the value immediately preceding the effects of the corresponding member function).
[edit] Notes
Unlike most compound assignment operators, the compound assignment operators for atomic_ref
do not return a reference to their left-hand arguments. They return a copy of the stored value instead.
[edit] See also
atomically increments or decrements the referenced object by one (public member function) |