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Re: A bug in Mac OS version? [message #13860 is a reply to message #13858]

Tue, 15 December 1998 00:00

hellman
Messages: 4
Registered: September 1998

Junior Member

In article <MPG.10e0810a9c715cf9896ad@news.frii.com>, davidf@dfanning.com
(David Fanning) wrote:

> Saeid Zoonematkermani (Saeid.Zoonematkermani@sunysb.edu) writes:
>
>> IDL> print, !version
>> { PowerMac MacOS MacOS 5.2 Oct 30 1998}
>> IDL> print, '0000FF'x
>> 255
>> IDL> print, '00FF00'x
>> -256
>> IDL> print, 'FF0000'x
>> 16711680
>
> In fact, this value you are trying to create here is really
> a LONG integer. You, of course, are creating it as a SHORT
> integer. Now, I'll give you that IDL didn't used to behave
> so boarishly, but what it is doing (i.e. wrapping), IMHO,
> is entirely within its rights.

I would agree with you that

IDL> print, '00FF00'x
-256

might be reasonable, but then I'd expect

IDL> print, 'FF0000'x
0

If the behaviour shown above isn't wrong, then IDL is a very perverse language.

- Olof

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[Message index]

		Re: A bug in Mac OS version? By: Richard G. French on Tue, 15 December 1998 00:00
		Re: A bug in Mac OS version? By: davidf on Tue, 15 December 1998 00:00
		Re: A bug in Mac OS version? By: hellman on Tue, 15 December 1998 00:00
		Re: A bug in Mac OS version? By: davidf on Tue, 15 December 1998 00:00

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