rtpsw commented on PR #14934:
URL: https://github.com/apache/arrow/pull/14934#issuecomment-1369115082

   > Sorry for the delay looking at this (Christmas vacation). This looks like 
a solid addition, though it will need a rebase so I am marking "request 
changes".
   
   Sure.
   
   > Is negative tolerance something that is often used? Wouldn't it be more 
intuitive to specify an absolute tolerance that works in both directions? (e.g. 
grab the closest entry within 20ms of the LHS in either direction)?
   
   @icexelloss brought up the negative tolerance, so he should be able to say 
more about the use cases. Regarding the idea of both-directions, I still can't 
speak about the use cases, but my guess is the implementation shouldn't be too 
hard to include in this PR (likely by changing `bool negative` to an enum).


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