[Issue 9717] `std.math.round` rounds away from zero instead of to the nearest even integer

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=9717


monarchdodra at gmail.com changed:

           What    |Removed                     |Added
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                 CC|                            |monarchdodra at gmail.com


--- Comment #2 from monarchdodra at gmail.com 2013-03-15 10:46:11 PDT ---
(In reply to comment #1)
> Do you have an example code for this bug? I did this:
> 
> void main() { writeln(std.math.round(1.4)); }
> 
> and the output is 1, as expected.

I believe the "nearest even" is for the .5 tie-breakers:

EG: 
round(0.5) == 0
round(1.5) == 2
round(2.5) == 2

It sounds strange at first, but it keeps things "sign agnostic" and nor shifts
the average.

http://en.wikipedia.org/wiki/Rounding#Round_half_to_even

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