inverse bytes (LSB <-> MSB)

def inverse(value: int):
    mask = 0xFF
    width = 8
    result = 0
    bit = 1
    rev = 7

    while value:
        for shift in range(width):
            if value & mask & bit << shift:
                result |= bit << (rev - shift)

        value >>= width

        if value:
            result <<= width

    return result