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atomic_compare_exchange_strong

atomic_compare_exchange_weak, atomic_compare_exchange_strong, atomic_compare_exchange_weak_explicit, atomic_compare_exchange_strong_explicit

Defined in header <stdatomic.h> 
_Bool atomic_compare_exchange_strong( volatile A* obj,
                                      C* expected, C desired );
 (1) (since C11) 
_Bool atomic_compare_exchange_weak( volatile A *obj, 
                                    C* expected, C desired );
 (2) (since C11) 
_Bool atomic_compare_exchange_strong_expl