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NaN problems [message #43584]

Thu, 21 April 2005 06:37

David Lopez Pons
Messages: 8
Registered: July 2003

Junior Member

Hi everybody.
I have a problem detecting NaN values. When I write:

err=findgen(10)-5
res=err^2.5
print,res

NaN NaN NaN NaN NaN
0.00000 1.00000 5.65685 15.5885 32.0000

Until here everything is OK, but now i want to look for Nan values in my
result so I write:

print,where(res EQ !values.f_nan)
-1

I can see the NaN values in res. Why they are not equal to !values.f_nan?

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[Message index]

		NaN problems By: David Lopez Pons on Thu, 21 April 2005 06:37
		Re: NaN problems By: R.Bauer on Sat, 23 April 2005 12:48
		Re: NaN problems By: David Fanning on Fri, 22 April 2005 20:38
		Re: NaN problems By: yp on Mon, 25 April 2005 16:51
		Re: NaN problems By: yp on Mon, 25 April 2005 16:49
		Re: NAN Problem By: R.Bauer on Thu, 14 January 2010 00:49
		Re: NAN Problem By: penteado on Wed, 13 January 2010 16:15
		Re: NAN Problem By: R.G.Stockwell on Wed, 13 January 2010 16:00
		Re: NAN Problem By: Foldy Lajos on Wed, 13 January 2010 13:00
		Re: NAN Problem By: penteado on Wed, 13 January 2010 12:59
		Re: NAN Problem By: David Fanning on Wed, 13 January 2010 12:39
		Re: NAN Problem By: jeanh on Wed, 13 January 2010 12:28

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