[Numpy-discussion] bug with numpy 2 ** N

Wed Mar 23 14:05:32 EDT 2011

Hi,

I don't thnk this is a bug. You are playign with C integers, not Python
integers, and the former are limited. It's a common "feature" in all
processors (even DSPs).

Matthieu

2011/3/23 Dmitrey <tmp50 at ukr.net>

>  >>> 2**64
> 18446744073709551616L
> >>> 2**array(64)
> -9223372036854775808
> >>> 2**100
> 1267650600228229401496703205376L
> >>> 2**array(100)
> -9223372036854775808
>
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