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Re: fix(4.70*100) is... 469 [message #53555 is a reply to message #53554]

Thu, 19 April 2007 08:13

eddedmondson
Messages: 1
Registered: April 2007

Junior Member

b_efremova@yahoo.com wrote:
> Sorry Guys, I should have made myself clearer.
> I'm afraid David this is not actually the question you describe in
> your article.
> and I do not expect better accuracy than I provide.
>
> There is nothing wrong here with the floating point accuracy.
> print,4.700*100.00
> 470.000
>

People have posted similar stuff where doubles have been brought
in. It's perhaps clearer to post an example where doubles stay out of
it:

IDL> print, format='(F9)', 4.7
4.6999998

You're not starting with all of your 4.7.

--
Edd

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[Message index]

		Re: fix(4.70*100) is... 469 By: b_efremova@yahoo.com on Thu, 19 April 2007 11:47
		Re: fix(4.70*100) is... 469 By: mmeron on Thu, 19 April 2007 11:15
		Re: fix(4.70*100) is... 469 By: b_efremova@yahoo.com on Thu, 19 April 2007 11:13
		Re: fix(4.70*100) is... 469 By: David Fanning on Thu, 19 April 2007 12:07
		Re: fix(4.70*100) is... 469 By: David Fanning on Thu, 19 April 2007 11:52
		Re: fix(4.70*100) is... 469 By: b_efremova@yahoo.com on Thu, 19 April 2007 10:44
		Re: fix(4.70*100) is... 469 By: b_efremova@yahoo.com on Thu, 19 April 2007 10:03
		Re: fix(4.70*100) is... 469 By: mmeron on Thu, 19 April 2007 10:00
		Re: fix(4.70*100) is... 469 By: mmeron on Thu, 19 April 2007 09:50
		Re: fix(4.70*100) is... 469 By: David Fanning on Thu, 19 April 2007 09:54
		Re: fix(4.70*100) is... 469 By: Paolo Grigis on Fri, 20 April 2007 01:04
		Re: fix(4.70*100) is... 469 By: Jean H. on Thu, 19 April 2007 08:35
		Re: fix(4.70*100) is... 469 By: David Fanning on Thu, 19 April 2007 09:35
		Re: fix(4.70*100) is... 469 By: Christopher Thom on Thu, 19 April 2007 08:21
		Re: fix(4.70*100) is... 469 By: eddedmondson on Thu, 19 April 2007 08:13
		Re: fix(4.70*100) is... 469 By: Paolo Grigis on Thu, 19 April 2007 08:02
		Re: fix(4.70*100) is... 469 By: b_efremova@yahoo.com on Thu, 19 April 2007 07:41
		Re: fix(4.70*100) is... 469 By: b_efremova@yahoo.com on Thu, 19 April 2007 07:32
		Re: fix(4.70*100) is... 469 By: David Fanning on Thu, 19 April 2007 07:48
		Re: fix(4.70*100) is... 469 By: David Fanning on Thu, 19 April 2007 07:42
		Re: fix(4.70*100) is... 469 By: KRDean on Thu, 19 April 2007 06:41
		Re: fix(4.70*100) is... 469 By: Paolo Grigis on Thu, 19 April 2007 01:13
		Re: fix(4.70*100) is... 469 By: mmeron on Wed, 18 April 2007 22:56
		Re: fix(4.70*100) is... 469 By: Qing on Wed, 18 April 2007 21:38
		Re: fix(4.70*100) is... 469 By: Qing on Wed, 18 April 2007 21:36
		Re: fix(4.70*100) is... 469 By: Qing on Wed, 18 April 2007 21:31
		Re: fix(4.70*100) is... 469 By: Jean H. on Wed, 18 April 2007 17:58
		Re: fix(4.70*100) is... 469 By: mmeron on Wed, 18 April 2007 17:14
		Re: fix(4.70*100) is... 469 By: Jean H. on Wed, 18 April 2007 16:48
		Re: fix(4.70*100) is... 469 By: David Fanning on Wed, 18 April 2007 17:12
		Re: fix(4.70*100) is... 469 By: mmeron on Fri, 20 April 2007 00:33
		Re: fix(4.70*100) is... 469 By: Qing on Thu, 19 April 2007 23:43
		Re: fix(4.70*100) is... 469 By: Paul Van Delst[1] on Thu, 19 April 2007 12:06

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