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BUG: Avoid sentinel-infinity comparison problems (#13445) #14006

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@dsm054 dsm054 commented Aug 16, 2016

The problem causing #13445 ultimately traces to the fact that our Infinity/NegInfinity objects were greater than/less than themselves, which violates an assumption numpy makes when sorting. This was separately reported as numpy/numpy#7934, but we can fix and test downstream as well.

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codecov-io commented Aug 16, 2016

Current coverage is 85.28% (diff: 100%)

Merging #14006 into master will increase coverage by <.01%

@@             master     #14006   diff @@
==========================================
  Files           139        139          
  Lines         50229      50229          
  Methods           0          0          
  Messages          0          0          
  Branches          0          0          
==========================================
+ Hits          42837      42838     +1   
+ Misses         7392       7391     -1   
  Partials          0          0          

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@jreback jreback added Bug Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff labels Aug 16, 2016
@jreback jreback added this to the 0.19.0 milestone Aug 16, 2016
@jreback jreback closed this in 5c27c02 Aug 16, 2016
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jreback commented Aug 16, 2016

thanks @dsm054

always nice to see PR's from you! keep em coming!

@dsm054 dsm054 deleted the fix_rank_segfault branch August 16, 2016 12:12
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Pandas series.rank(ascending=False) get rise to SIGSEGV error
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