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Discussion on numerical accuracy #35

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ocramz opened this issue Mar 26, 2018 · 0 comments

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documentation enhancement help wanted

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ocramz commented Mar 26, 2018

"How to produce numerically stable/reliable Haskell programs? "

Numerically stable summation : Numeric.Sum in https://hackage.haskell.org/package/math-functions
- case in point:

> foldr (+) 0 [1.0, 10.0e100, 1.0, (-10.0e100)]
1.0

> foldl (+) 0 [1.0, 10.0e100, 1.0, (-10.0e100)]
0.0

import Numeric.Sum -- math-functions 
> Numeric.Sum.sum kbn [1.0, 10.0e100, 1.0, (-10.0e100)] 2.0

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ocramz added enhancement help wanted documentation labels

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