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Re: Re: Re: Windows PSPPIRE/PSPP is pretty wonky (Harry Thijssen)

From: John Darrington
Subject: Re: Re: Re: Windows PSPPIRE/PSPP is pretty wonky (Harry Thijssen)
Date: Wed, 7 Jan 2015 19:53:20 +0100
User-agent: Mutt/1.5.21 (2010-09-15)

On Wed, Jan 07, 2015 at 07:36:04PM +0100, Harry Thijssen wrote:
     > >
     > > Regarding the 99999 issue, I certainly don't get that on GNU/Linux - my
     > > guess is that
     > > Windows has rounding issues and is miscalculating 300 as
     > > 299.99999999999999 (the left
     > > hand side is off the page).
     > >
     > Maybe it is possible to round it when used on the axis.

The question is, to what precision do we round it?  That is a non-trivial
problem to solve in the general case.

Having looked at it for some time, I have concluded that the only real solution
it to do all the arithmetic relating to the axes in a decimal rather than a
binary floating point system.

I have the start of a patch somewhere which I will try to resurrect and get 
working properly.


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