[PR] test(arrow-buffer): generate negative operands in `test_i256_fuzz` [arrow-rs]

["mbutrovich (via GitHub)" <gi...@apache.org>]

mbutrovich opened a new pull request, #11455:
URL: https://github.com/apache/arrow-rs/pull/11455

   # Which issue does this PR close?
   
   - Closes #11452.
   
   # Rationale for this change
   
   See #11452.
   
   # What changes are included in this PR?
   
   The length range is now `0..=32`, and each operand is negated with probability 1/2. The negation covers small negative values, which random bytes almost never produce.
   
   # Are these changes tested?
   
   This PR only changes a test. With `i256::div_rem` changed to return a floored remainder, the old `test_i256_fuzz` passes and the new one fails. On `main` the new test passes.
   
   # Are there any significant user-facing changes?
   
   No.
   
   ## AI Disclosure
   
   I wrote this PR with help from Claude but understand and support the core approach, implementation, and test coverage.
   


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Re: [PR] test(arrow-buffer): generate negative operands in `test_i256_fuzz` [arrow-rs]

["alamb (via GitHub)" <gi...@apache.org>]

alamb merged PR #11455:
URL: https://github.com/apache/arrow-rs/pull/11455


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