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Re: Aw: Re: TOTAL gives totally different result on identical array [message #76901]

Fri, 08 July 2011 06:38

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

M. Suklitsch writes:

> So, if I get the discussion in your thread right there's
> "simply" a precision and/or array size problem with the
> builtin TOTAL function? That's not really reassuring
> since I am dealing with arrays of such size all the time.

Then you had better really pay attention to how computers
represent numbers! :-)

http://www.idlcoyote.com/math_tips/sky_is_falling.html
http://www.idlcoyote.com/math_tips/razoredge.html

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thue. ("Perhaps thos speakest truth.")

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By: David Fanning on Fri, 08 July 2011 06:38

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