On Tuesday 19 September 2006 14:46, Travis Oliphant wrote:
Sebastian Haase wrote:
Hi, What are the possible values of arr.dtype.kind ?
It seems that signed and unsigned are considered to be the same "kind"
arr=N.arange(10,dtype=N.uint) arr.dtype.kind
'i'
arr.dtype.itemsize
8 (OK - this is just showing off our amd64 linux ;-) )
How can I distinguish signed from unsigned without having to list all possible cases explicitly ?
Hmm.... This is a problem. There is a 'u' kind for unsigned integers.
On my system I get 'u' when running the code you just gave.
Can anybody on a 64-bit system confirm?
I'm on 64-bit Debian: In [11]: arr=N.arange(10,dtype=N.uint) In [12]: arr.dtype.kind Out[12]: 'u' In [13]: arr.dtype.itemsize Out[13]: 4 In [14]: arr=N.arange(10,dtype=N.long) In [15]: arr.dtype.kind Out[15]: 'i' In [16]: arr.dtype.itemsize Out[16]: 8 Scott -- Scott M. Ransom Address: NRAO Phone: (434) 296-0320 520 Edgemont Rd. email: sransom@nrao.edu Charlottesville, VA 22903 USA GPG Fingerprint: 06A9 9553 78BE 16DB 407B FFCA 9BFA B6FF FFD3 2989