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Re: JULDAY-CALDAT problem [message #38233]

Fri, 27 February 2004 08:17

James Kuyper
Messages: 425
Registered: March 2000

Senior Member

Luciano wrote:
>
> Thanks David and Ben for your help. I've solved the problem by not
> using Julday and Caldat...
> David, if for the computer 0=10^-5 then is not me who has to start
> counting like a computer, it should be the other way around :)
>
> This is simply wrong and should be fixed at some level! I understand
> all the hardware, 0s and 1s, significant figures and related problems
> described in your "Help! The Sky is Falling!" section. But... don't
> you think this should be fixed somehow?
>
> If you ask me, 0 should be 0, and the computer should be able to know
> it...

There are ways to achieve that - they basically involve storing and
manipulation all the components of dates as integers, rather than
floating point. As long as floating point numbers are used, inaccuracy
is unavoidable, since you can't represent all the real numbers in a
finite non-zero range, using a representation that takes up a fixed
maximum about of memory.

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[Message index]

		Re: JULDAY-CALDAT problem By: James Kuyper on Fri, 27 February 2004 08:17
		Re: JULDAY-CALDAT problem By: Paul Van Delst[1] on Fri, 27 February 2004 08:06
		Re: JULDAY-CALDAT problem By: David Fanning on Fri, 27 February 2004 05:28
		Re: JULDAY-CALDAT problem By: lucianor on Fri, 27 February 2004 02:30
		Re: JULDAY-CALDAT problem By: David Fanning on Thu, 26 February 2004 08:51
		Re: JULDAY-CALDAT problem By: David Fanning on Thu, 26 February 2004 08:41
		Re: JULDAY-CALDAT problem By: btupper on Thu, 26 February 2004 08:17
		Re: JULDAY-CALDAT problem By: David Fanning on Thu, 26 February 2004 07:22
		Re: JULDAY-CALDAT problem By: btupper on Thu, 26 February 2004 06:52
		Re: JULDAY-CALDAT problem By: David Fanning on Thu, 26 February 2004 06:19
		Re: JULDAY-CALDAT problem By: Mark Hadfield on Sun, 29 February 2004 14:50

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