[issue1640] Enhancements for mathmodule

[Christian Heimes]

Christian Heimes added the comment:

Mark Dickinson wrote:
> Currently, on Linux I get:
>   - overflow (exp(1000))    -> OverflowError
>   - domain error (sqrt(-1)) -> ValueError
>   - singularity (log(0))    -> OverflowError

Windows raises the same exceptions as Linux.

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<http://bugs.python.org/issue1640>
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