Variables
Const I128_SIZE
I128_SIZE: 16 = 16
Const maxBigU128
maxBigU128: BigNumber = bigPow(2, 128).minus(1)
Const maxI128
maxI128: BigNumber = bigPow(2, 127).minus(1)
Const minI128
minI128: BigNumber = bigPow(2, 127).negated()
Const pow128
pow128: BigNumber = bigPow(2, 128)