[Numpy-discussion] uint64 typecasting with scalars broken (?)

Charles R Harris charlesr.harris@gmail....
Sun Apr 22 18:28:58 CDT 2007


On 4/22/07, Christian Marquardt <christian@marquardt.sc> wrote:
>
> Hello,
>
> The following is what I expected...
>
>    >>> y = 1234
>    >>> x = array([1], dtype = "uint64")
>    >>> print x + y, (x + y).dtype.type
>    [1235] <type 'numpy.uint64'>
>
> but is this the way it should be? (numpy 1.0.2, Linux, Intel comilers)
>
>    >>> print x[0] + y, type(x[0] + y)
>    1235.0 <type 'numpy.float64'>


Looks like a bug to me:

In [5]: x = array([1],dtype=uint64)

In [6]: type(x[0])
Out[6]: <type 'numpy.uint64'>

In [7]: type(x[0]+1)
Out[7]: <type 'numpy.float64'>

Chuck
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