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Re: where() and IEEE NaN--why float? [message #17948]

Fri, 19 November 1999 00:00

mitch grunes
Messages: 6
Registered: November 1999

Junior Member

David Fanning wrote:
> I usually check for NANs like this:
>
> IDL> Print, Where( NOT Float( Finite(a) ) )
> 2 4

Me too--except I leave out Float.

I assume that you are trying to see whether it can be stored as a legit
float (4 byte real). I usually calculate using doubles (8 byte reals), which have
a larger range and better accuracy, except when storage is at an extreme
premium.

Or am I missing something?

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Re: where() and IEEE NaN--why float?

By: mitch grunes on Fri, 19 November 1999 00:00

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