def _value_common(self, value: int) -> int:
value = int(value)
self.zero = value == 0
self.negative = BinaryUtils.msb(value)
if value > max_32_bits_signed or value < min_32_bits_signed:
raise ValueError
return value
def _unsigned_add(self, a, b, value: int) -> int:
self._reset()
self.carry = value > max_32_bits
self.negative = BinaryUtils.msb(a)
if value > max_32_bits:
value = value - max_32_bits
return value
def test_msb():
assert BinaryUtils.msb(1) == 0
assert BinaryUtils.msb(0) == 0
assert BinaryUtils.msb(-1) == 1