:exhaust \(x:[6]) -> x <<< (0x10000000000000000 : [68]) == x <<< 4
:exhaust \(x:[6]) -> x >>> (0x10000000000000000 : [68]) == x >>> 4
:exhaust \(x:[8]) -> x << (0x10000000000000000 : [68]) == 0
:exhaust \(x:[8]) -> x >> (0x10000000000000000 : [68]) == 0
:exhaust \(x:[8]) -> x << (0x8000000000000000 : [64]) == 0
:exhaust \(x:[8]) -> x >> (0x8000000000000000 : [64]) == 0