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Re: Philosophical Question about NAN [message #63672]

Wed, 19 November 2008 08:09

Foldy Lajos
Messages: 268
Registered: October 2001

Senior Member

On Wed, 19 Nov 2008, R.G. Stockwell wrote:

> Also, it is not clear on how to handle a NAN - it is ambiguous.

Even IDL is confused. For a single element input, /cumul in TOTAL should
be a no-op. Let's try it:

IDL> print, !version
{ x86_64 linux unix linux 7.0 Oct 25 2007 64 64}
IDL> a=complex(1.0, !values.f_nan)
IDL> print, total(a, /nan)
( 0.00000, 0.00000)
IDL> print, total(a, /nan, /cumul)
( 1.00000, 0.00000)

regards,
lajos

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[Message index]

		Re: Philosophical Question about NAN By: Foldy Lajos on Wed, 19 November 2008 08:09
		Re: Philosophical Question about NAN By: R.G. Stockwell on Wed, 19 November 2008 06:32
		Re: Philosophical Question about NAN By: R.Bauer on Tue, 18 November 2008 12:55
		Re: Philosophical Question about NAN By: pgrigis on Tue, 18 November 2008 08:42
		Re: Philosophical Question about NAN By: Jeremy Bailin on Tue, 18 November 2008 05:05
		Re: Philosophical Question about NAN By: R.Bauer on Tue, 18 November 2008 00:18
		Re: Philosophical Question about NAN By: pgrigis on Mon, 17 November 2008 17:07
		Re: Philosophical Question about NAN By: R.Bauer on Mon, 17 November 2008 16:38
		Re: Philosophical Question about NAN By: Kenneth P. Bowman on Mon, 17 November 2008 07:32
		Re: Philosophical Question about NAN By: wlandsman on Mon, 17 November 2008 08:28
		Re: Philosophical Question about NAN By: David Fanning on Mon, 17 November 2008 08:02
		Re: Philosophical Question about NAN By: Rainer on Mon, 17 November 2008 08:01
		Re: Philosophical Question about NAN By: wlandsman on Mon, 17 November 2008 07:54
		Re: Philosophical Question about NAN By: Mark[1] on Wed, 19 November 2008 16:24

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