[Numpy-discussion] Formatting uint64 number
Thu Nov 5 15:35:31 CST 2009
On Sun, Nov 1, 2009 at 8:49 PM, Charles R Harris
> On Sun, Nov 1, 2009 at 8:37 PM, Thomas Robitaille <
> email@example.com> wrote:
>> I have a question concerning uint64 numbers - let's say I want to
>> format a uint64 number that is > 2**31, at the moment it's necessary
>> to wrap the numpy number inside long before formatting
>> In : "%40i" % np.uint64(2**64-1)
>> Out: ' -1'
>> In : "%40i" % long(np.uint64(2**64-1))
>> Out: ' 18446744073709551615'
>> Would it be easy to modify numpy such that it automatically converts
>> uint64 numbers to long() instead of int() when implicitly converted to
>> python types?
>> Hmm, I suspect this is a bug whose source is uint64 having an integer
> conversion function as part of the type whereas it should be undefined. A
> quick look at the source leaves me befuddled, so tracking down just how this
> happens might be a bit of work.
Based on this, unless someone has other ideas/input, Thomas, please file a
bug ticket at:
(Note: you'll have to register first - please see
http://scipy.org/BugReportfor more on that, as well as bug report
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