U64_C              32 include/asm-generic/int-ll64.h #define U64_C(x) x ## ULL
U64_C              43 include/asm-generic/int-ll64.h #define U64_C(x) x
U64_C              32 tools/testing/selftests/rcutorture/formal/srcu-cbmc/src/int_typedefs.h #define U64_C(x) UINT64_C(x)