[issue13060] allow other rounding modes in round()

[Arne Babenhauserheide]

Arne Babenhauserheide <arne_bab at web.de> added the comment:

I also think that rounding half away from zero would be the most obvious choice, as it does not introduce a bias for random numbers distributed around 0 while being close to what I would expect from school mathematics.

The case of n*(random() - 0.5) which I assume as common, this should work well, which is not the case for rounding towards +infinity.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue13060>
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