(self, other)
| 89 | return self |
| 90 | |
| 91 | def __sub__(self, other): |
| 92 | v = self.value |
| 93 | if isinstance(other, Serial): |
| 94 | delta = other.value |
| 95 | elif isinstance(other, int): |
| 96 | delta = other |
| 97 | else: |
| 98 | raise ValueError |
| 99 | if abs(delta) > (2 ** (self.bits - 1) - 1): |
| 100 | raise ValueError |
| 101 | v -= delta |
| 102 | v = v % 2**self.bits |
| 103 | return Serial(v, self.bits) |
| 104 | |
| 105 | def __isub__(self, other): |
| 106 | v = self.value |