Re: [boost] boost interval arithmetic

Subject: Re: [boost] boost interval arithmetic
From: Thijs van den Berg (thijs_at_[hidden])
Date: 2015-01-15 06:53:16

On Thu, Jan 15, 2015 at 12:31 PM, Павел Кудан <coodan_at_[hidden]> wrote:

>  From mathematical point of view, of course. I does not try to estimate
> how much boost interval conflicts with own conception (although it does
> conflict - one politics for comparison and completely different for
> arithmetic). I am trying to show errors making whole boost interval
> obsolete in real interval applications. And what we are talking about
> (misconception in one of basic operators) is important thing of that kind.
> As without real applications, this class will be dead as unusable.
>
>
> So I would like that you confess that statement [-inf, inf] IS EMPTY is
> obviously not correct from the point of view of mathematics. Really obvious
> thing. Please, tell, what is your opinion on this simple subject?
>
What does [a, b] mean in your opinion? In boost interval it means that the
resulting value of a computation involving intervals  is somewhere in that
range. It's not set theory, it's not multi-inverval. You can different
results if you do operations in differen order... that's all fine because
it's not about math but about numerical computations. So please stick to
the boost definition is you want to discuss that. If you do that then I'll
reply.