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sum() should use full precision summation algorithm #4

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1st1 opened this issue Dec 11, 2014 · 1 comment
Open

sum() should use full precision summation algorithm #4

1st1 opened this issue Dec 11, 2014 · 1 comment
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1st1 commented Dec 11, 2014 

 > F.sum([1, 1e100, 1, -1e100])
 0 // incorrect, should be 2.

Some information about Kahan algorithm http://en.wikipedia.org/wiki/Kahan_summation_algorithm
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1st1 commented Dec 11, 2014

Here's a gist with a proof of concept implementation: https://gist.github.com/1st1/1199936ef171a3696886

@driscollwebdev driscollwebdev self-assigned this Dec 11, 2014
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