mbutrovich commented on PR #7358:
URL: https://github.com/apache/arrow-rs/pull/7358#issuecomment-2770735324
For `ceil` I disassembled `MutableBuffer::new_null` since all it does is use
`ceil` and then allocate:
```rust
/// creates a new [MutableBuffer] with capacity and length capable of
holding `len` bits.
/// This is useful to create a buffer for packed bitmaps.
pub fn new_null(len: usize) -> Self {
let num_bytes = bit_util::ceil(len, 8);
MutableBuffer::from_len_zeroed(num_bytes)
}
```
[The generated code is the same between main this
PR.](https://www.diffchecker.com/LSNdNnWY/)
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