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Re: Relational Operators on Windows [message #71559]

Sun, 27 June 2010 06:56

wlandsman
Messages: 743
Registered: June 2000

Senior Member

On Jun 26, 2:18 am, Paulo Penteado <pp.pente...@gmail.com> wrote:

>> IDL> a = [3.2, !VALUES.F_NAN, 2]
>> IDL> a = a [ where(a lt 3) ]
>> % Program caused arithmetic error: Floating illegal operand
>> IDL> print, a
>> 2.00000
>
> That is just a floating point exception. It does not keep the where()
> from working, does not interrupt the program, and can be suppressed
> changing !except.

That is all true, but I think one wants to avoid spurious floating
point exception messages (and not suppress them) when possible,
because sometimes a FP exception can indicate a real problem. Since
no FP exception for the above code occurs on Mac or Linux, I thought I
could get away without using FINITE(), but I will now add it to my
code. --Wayne

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[Message index]

		Re: Relational Operators on Windows By: wlandsman on Sun, 27 June 2010 06:56
		Re: Relational Operators on Windows By: penteado on Fri, 25 June 2010 23:18
		Re: Relational Operators on Windows By: David Fanning on Fri, 25 June 2010 18:45

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