I mean, you are converting a byte to an int, the r...

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[dalexander]

I mean, you are converting a byte to an int, the resulting int can never be negative. And an int that’s -1 has a hex value of 0xFFFFFFFF the same as one that’s 2^32-1. One thing that might bite you is if you are doing right-shifts at some point in the future, you probably want to use ushr not shr. shr will fill the left side with 1s if the number was negative.