atomic_fcmpset_int
#define atomic_fcmpset_int atomic_fcmpset_32
#define atomic_fcmpset_int atomic_fcmpset_32
atomic_fcmpset_int(volatile u_int *p, u_int *cmpval, u_int newval)
#define atomic_fcmpset_int atomic_fcmpset_32
#define atomic_fcmpset_int ATOMIC_SAN(fcmpset_int)