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Re: Interesting Filled Contour Problem [message #79900 is a reply to message #79897]

Mon, 16 April 2012 20:51

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Craig Markwardt writes:

> Whaaa? I was under the impression that
> NAN = !values.d_nan
> NAN OP X
> will always result in a value of NAN, for all operations OP and for all operands X. In other words, I don't think IDL's behavior is kosher.
>
> Strangely,
> NAN < 0
> produces NAN, so apparently NAN is a negative number (!!!).

I guess. I'm as surprised as you are. Inconsistent,
to say the least. :-)

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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[Message index]

		Re: Interesting Filled Contour Problem By: Kenneth P. Bowman on Tue, 17 April 2012 09:00
		Re: Interesting Filled Contour Problem By: Carsten Lechte on Tue, 17 April 2012 04:54
		Re: Interesting Filled Contour Problem By: David Fanning on Mon, 16 April 2012 20:51
		Re: Interesting Filled Contour Problem By: Craig Markwardt on Mon, 16 April 2012 20:21
		Re: Interesting Filled Contour Problem By: David Fanning on Mon, 16 April 2012 13:57
		Re: Interesting Filled Contour Problem By: David Fanning on Mon, 16 April 2012 12:28

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