merge_64 - Linux

48

#define merge_64(r1, r2) ((((r1) & 0xffffffffUL) << 32) + ((r2) & 0xffffffffUL))

51

#define merge_64(r1, r2) ((((r2) & 0xffffffffUL) << 32) + ((r1) & 0xffffffffUL))

33

#define merge_64(low, high) (((u64)high << 32) | low)

35

#define merge_64(high, low) (((u64)high << 32) | low)