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cdef extern from "<atomic>" namespace "std" nogil:
cdef enum memory_order:
memory_order_relaxed
memory_order_consume
memory_order_acquire
memory_order_release
memory_order_acq_rel
memory_order_seq_cst
cdef cppclass atomic[T]:
atomic()
atomic(T)
bint is_lock_free()
void store(T)
void store(T, memory_order)
T load()
T load(memory_order)
T exchange(T)
T exchange(T, memory_order)
bint compare_exchange_weak(T&, T, memory_order, memory_order)
bint compare_exchange_weak(T&, T, memory_order)
bint compare_exchange_weak(T&, T)
bint compare_exchange_strong(T&, T, memory_order, memory_order)
bint compare_exchange_strong(T&, T, memory_order)
bint compare_exchange_strong(T&, T)
T fetch_add(T, memory_order)
T fetch_add(T)
T fetch_sub(T, memory_order)
T fetch_sub(T)
T fetch_and(T, memory_order)
T fetch_and(T)
T fetch_or(T, memory_order)
T fetch_or(T)
T fetch_xor(T, memory_order)
T fetch_xor(T)
T operator++()
T operator++(int)
T operator--()
T operator--(int)
# modify-in-place operators not yet supported by Cython:
# T operator+=(T)
# T operator-=(T)
# T operator&=(T)
# T operator|=(T)
# T operator^=(T)
bint operator==(atomic[T]&, atomic[T]&)
bint operator==(atomic[T]&, T&)
bint operator==(T&, atomic[T]&)
bint operator!=(atomic[T]&, atomic[T]&)
bint operator!=(atomic[T]&, T&)
bint operator!=(T&, atomic[T]&)
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