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Re: NaN problems [message #43726 is a reply to message #43583]

Fri, 22 April 2005 19:43

Y.T.
Messages: 25
Registered: December 2004

Junior Member

> http://www.dfanning.com/math_tips/nans.html

Pretty cool page.

;)

I don't have access to IDL on a win-box, but I have a (potentially
stupid) question: On that page of yours where you write

IDL> print, array ne array
0 0 0 0 0

have you tried the converse, i.e.

IDL> print, array eq array

?

I am asking since, while it is true that a NaN is not equal to a NaN it
does not seem to follow (to my wrinkled brain) that a NaN is
necessarily UNequal to a NaN.

In your version you test for the latter, and I'm kinda curious what
would happen if you tried the former...

cordially

Y.T.

--
Remove YourClothes before you email me.

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[Message index]

		Re: NaN problems By: Vince Hradil on Thu, 21 April 2005 06:43
		Re: NaN problems By: David Fanning on Thu, 21 April 2005 06:42
		Re: NaN problems By: Y.T. on Fri, 22 April 2005 19:43

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