On Dec 2, 2012, at 12:37 PM, Stefan Krastanov
<krastanov.ste...@gmail.com> wrote:
> The plotting module uses numpy floats so it will fail on very small
> number or on small intervals.
>
> Even worse, the main plotting backend, namely matplotlib, also uses
> machine precision, so even if we do the calculations in mpmath, we
> will have to do the rescaling ourselves.
>
> However in this case the problem is not only in the plotting module because
> both
>
> E(exp(I*1e-26*X)).evalf()
>
> and
>
> E(exp(I*1e-30*X)).evalf()
>
> return real parts of 1.0
I think you may need to set the precision higher in evalf. You may
also have to use Float("1e-30", 30) so that the precision of that
number is correct.
Aaron Meurer
>
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