dmcq (dmcq.delete@this.fano.co.uk) on November 1, 2015 4:52 pm wrote:
> bakaneko (nyan.delete@this.hyan.wan) on November 1, 2015 3:35 pm wrote:
> > dmcq (dmcq.delete@this.fano.co.uk) on November 1, 2015 10:27 am wrote:
> > > bakaneko (nyan.delete@this.hyan.wan) on November 1, 2015 10:11 am wrote:
> > > > dmcq (dmcq.delete@this.fano.co.uk) on November 1, 2015 7:36 am wrote:
> > > > > Engineers like to just get results and are willing to blow an extra couple of hours computer
> > > > > time if it saves them think time. They do have a clue but nobody is an expert at everything.
> > > > > There's no need to talk of them as not having a clue because they use double instead of float!
> > > >
> > > > You don't have a clue about what engineers do or don't.
> > > > Stop talking like you do.
> > > >
> > > > What you claim to be super hard stuff is part of the
> > > > basic education of anyone who wants to be an engineer
> > > > or go into the natural sciences. These people are
> > > > probably the last ones to worry about losing random
> > > > bits and they know how to interpret results.
> > > >
> > > > You are right about that they are as pragmatic as
> > > > everyone else, but you are still wrong and you still
> > > > need to properly learn about floating point math
> > > > before guessing how it is used.
> > >
> > > Gosh - well that really tells me. There I was under the erroneous impression that I knew quite a lot
> > > about all that and that my experience was perhaps worth something and you've gone and put me in my place.
> > > But I really would appreciate a more precise indication of the areas in which you consider me deficient,
> > > that would be really constructive thanks rather than just lading on how inadequate I am.
> >
> > Huh? Kahan addition or what it was and getting a large
> > error when you do some stupid operations is pretty basic.
> > Nothing of this proves that the person who says it knows
> > anything. People on every tech forum parrot that crap
> > every few weeks and think they know something.
> >
> > That aside, to get better at floating point math, learn
> > how engineers and scientists calculate their stuff by hand or
> > with a scientific calculator and what mathematical tools and
> > rulesets - not computer programs - they use.
> > The same rules are the foundation for when you use a computer
> > and floating point. And put another way: floating point makes
> > absolutely no sense without this knowledge or understanding
> > the rules.
>
> I was being sarcastic about your comments. I don't need your help in any way.
> You do not have the slightest inkling as to my background, experience or skill
> set. Plus it was you who brought up the business about just doing addition.

I didn't bring Kahan or matrix manipulations up
as examples for how qualified I am. That was the
sole reason I bothered to reply like that even if
you were angry and sarcastic.