extern (
C) nothrow @
nogc @
live static if((__traits(compiles, __atomic_test_and_set)) && (__traits(compiles, __ATOMIC_RELAXED)) && (__traits(compiles, __atomic_store_n)) && (__traits(compiles, __ATOMIC_RELEASE)) && (__traits(compiles, __atomic_load_n)) && (__traits(compiles, __ATOMIC_ACQUIRE)))