lgbo-ustc commented on issue #7455:
URL:
https://github.com/apache/incubator-gluten/issues/7455#issuecomment-2403861868
In CH, it caculate `mod` as following
```cpp
if (b & (b - 1))
{
libdivide::divider<A> divider(static_cast<A>(b));
for (size_t i = 0; i < size; ++i)
{
/// NOTE: perhaps, the division semantics with the remainder
of negative numbers is not preserved.
dst[i] = static_cast<ResultType>(src[i] - (src[i] / divider)
* b);
}
}
else
{
// gcc libdivide doesn't work well for pow2 division
auto mask = b - 1;
for (size_t i = 0; i < size; ++i)
dst[i] = static_cast<ResultType>(src[i] & mask);
}
```
It enter the `else` branch in this case.
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