cyb70289 commented on PR #15201:
URL: https://github.com/apache/arrow/pull/15201#issuecomment-1376733663
Not related to this PR, but the benchmark result is not obvious to me.
Why is `double` faster than `int64`? I suppose integer rounding does nothing.
```
Ceil<Int64Type, RoundMode::DOWN>/size:1048576/inverse_null_proportion:0
323253 ns 323251 ns
2161 bytes_per_second=3.02107G/s items_per_second=405.481M/s null_percent=0
size=1048.58k
Ceil<DoubleType, RoundMode::DOWN>/size:1048576/inverse_null_proportion:0
89834 ns 89832 ns
7795 bytes_per_second=10.871G/s items_per_second=1.45908G/s null_percent=0
size=1048.58k
```
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