theirix opened a new pull request, #9453:
URL: https://github.com/apache/arrow-rs/pull/9453

   # Which issue does this PR close?
   
   <!--
   We generally require a GitHub issue to be filed for all bug fixes and 
enhancements and this helps us generate change logs for our releases. You can 
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   - Closes #9452.
   
   # Rationale for this change
   
   Implementation of integer logarithms via `i256` crate. There is no matching 
`num_traits` trait, but this implementation provides a good motivation for such 
a trait.
   
   # What changes are included in this PR?
   
   - A new dependency on [`i256` 
crate](https://docs.rs/i256/latest/i256/struct.I256.html)
   - Checked methods (log, log2, log10)
   - Unchecked methods (panic by design)
   
   # Are these changes tested?
   
   - Unit tests
   
   # Are there any user-facing changes?
   
   <!--
   If there are user-facing changes then we may require documentation to be 
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   If there are any breaking changes to public APIs, please call them out.
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