std::atomic::operator+=,-=,&=,|=,^= (3) Linux Manual Page

std::atomic<T>::operator= – std::atomic<T>::operator=

Synopsis

T operator=(T desired) noexcept;

T operator=(T desired) volatile noexcept;
(1)(since C++ 11)(1)(since C++ 11)

    atomic &
    operator=(const atomic &) = delete;
(2)(since C++ 11)

    atomic &
    operator=(const atomic &) volatile = delete;

1) Atomically assigns a value desired to the atomic variable. Equivalent to store(desired).
2) Atomic variables are not CopyAssignable.

Parameters

desired – value to assign

Return value

desired.

Notes

Unlike most assignment operators, the assignment operators for atomic types do not return a reference to their left-hand arguments. They return a copy of the stored value instead.

See also

              constructs an atomic object
constructor (public member function)