Negative division bug?
casevh at comcast.net
casevh at comcast.net
Thu Aug 3 14:03:27 EDT 2006
> I was just screwing around.
> and found:
> >>> -1/100
> -1
> Shouldn't it be zero?
> 1/100 returns 0
> but -1/ANY_POSITIVE_INTEGER_NUMBER
> returns -1
>
> >>> -10/3
> -4
>
> It behaves correct for positive numbers, but for negative
> integers it seems to subtract one from the expected result.
>
That is the intended behavior. Look at the output of divmod().
>>> divmod(-1,100)
(-1,99)
Let (q,r) = divmod(d, v) with v > 0, the behavior is chosen so that 0<=
r < v.
casevh
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