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

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

Synopsis

T operator=(T desired) const noexcept;
(1)

    atomic_ref &
    operator=(const atomic_ref &) = delete;
(2)

1) Atomically assigns a value desired to the referenced object. Equivalent to store(desired).
2) atomic_ref is not CopyAssignable.

Parameters

desired – value to assign

Return value

desired.

Notes

Unlike most assignment operators, the assignment operator for atomic_ref does not return a reference to its left-hand argument. It returns a copy of the stored value instead.

See also

              constructs an atomic_ref object
constructor (public member function)