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Re: Pi is Rotten? [message #88048 is a reply to message #88044]

Fri, 14 March 2014 09:08

Norbert Hahn
Messages: 46
Registered: May 2003

Member

David Fanning <news@idlcoyote.com> wrote:

> Folks,
>
> Perhaps because today is Pi Day:
>
> http://bit.ly/1lDkQi4
>
> Andrew Cools alerts me to an IDL problem of utmost importance. I refer,
> of course, to an inexplicable problem with IDL's version of Pi:
>
> IDL> print, !dpi, format='(f0.18)'
> 3.1415926535897931

Hm, !dpi is a double precision number. It has about 16 useful digits.
Due to rounding the last digit is always uncertain.

Norbert

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[Message index]

		Pi is Rotten? By: David Fanning on Fri, 14 March 2014 06:17
		Re: Pi is Rotten? By: Norbert Hahn on Fri, 14 March 2014 09:08
		Re: Pi is Rotten? By: David Fanning on Fri, 14 March 2014 09:16
		Re: Pi is Rotten? By: Dick Jackson on Fri, 14 March 2014 11:30
		Re: Pi is Rotten? By: Jim Pendleton on Sun, 16 March 2014 13:10

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