By: bakaneko (nyan.delete@this.hyan.wan), November 1, 2015 3:35 pm
Room: Moderated Discussions
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.
> 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.
