[Numpy-discussion] ceil returns real ?

Sturla Molden sturla@molden...
Wed Jul 28 18:16:14 CDT 2010


>> Wed, 28 Jul 2010 14:26:36 +0200, Mark Bakker wrote:
>>> >  I don't understand why ceil and floor return real values [snip]
>>> >  Wouldn't an integer make more sense?
>
>
> On 7/28/2010 9:39 AM, Pauli Virtanen wrote:
>> Which integer? Only arbitrary-size integers (Python longs) are able to
>> span the whole floating-point range, but we don't necessarily want
>> 	np.ceil(some_array)
>> to start returning object arrays, because of efficiency reasons.
>
>
> Makes sense.  But couldn't a ``dtype`` argument still be useful?


np.ceil(some_array).astype(int)


Sturla



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