| 140 | |
| 141 | |
| 142 | class CumMax(CumulativeAggregations): |
| 143 | chunk_operation = M.cummax |
| 144 | aggregate_operation = staticmethod(methods.cummax_aggregate) |
| 145 | neutral_element = -math.inf # type: ignore[assignment] |
| 146 | |
| 147 | |
| 148 | class CumMin(CumulativeAggregations): |