Mark Dickinson <[EMAIL PROTECTED]> added the comment:

One more question:

What are the use cases for an exact summation algorithm?  That is, in what 
situations does one care about exactness rather than simply accuracy?  I 
know that loss of accuracy is a problem in things like numeric integration 
routines, but something like Kahan summation (faster and simpler, but not 
exact) usually takes care of that.

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Tracker <[EMAIL PROTECTED]>
<http://bugs.python.org/issue2819>
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