[issue2819] Full precision summation

[Raymond Hettinger]

Raymond Hettinger <rhettinger at users.sourceforge.net> added the comment:

Nice work Jean.  Marking the patch accepted. Mark please go ahead with 
commit.  

Once the commit has settled for a couple of days, go ahead with a 
separate patch to cover the rest of 754R logic for special values. 

After that one settles, close this issue and open a new one for a 
comparable patch in cmath.

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assignee: rhettinger -> marketdickinson
resolution:  -> accepted

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