[Scilab-users] ?==?utf-8?q? ?==?utf-8?q? [EXTERNAL] Re: Whay False

[Antoine Monmayrant]

Hello Paul,

We all make the same mistake at some point.
I did it few years ago and someone mentioned this article: "What every computer scientist should know about floating-point arithmetic"  by David Goldberg.
It's available online, for example here: http://perso.ens-lyon.fr/jean-michel.muller/goldberg.pdf

I think it's worth reading it.

Cheers,

Antoine

 
Le Mardi, Août 23, 2016 14:43 CEST, "Carrico, Paul" <paul.carrico at esterline.com> a écrit: 
 
> I've had like a newbie ....
> 
> Thanks for the lesson :)
> 
> EXPORT CONTROL :
> Cet email ne contient pas de données techniques
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> 
> De : users [mailto:users-bounces at lists.scilab.org] De la part de Samuel Gougeon
> Envoyé : mardi 23 août 2016 14:27
> À : Users mailing list for Scilab
> Objet : [EXTERNAL] Re: [Scilab-users] Whay False
> 
> Hello,
> 
> Le 23/08/2016 13:56, Carrico, Paul a écrit :
> Hi All,
> 
> I spent a lot of time in looking for an issue in my code ; finally I found the origin but I do not understand why ... probably a very basic reason :|
> 
> Any suggestion regarding the code here after ?
> --> modulo(2.05, 2) - 0.05
>  ans  =
> 
>   -1.804D-16
> 
> This is a classical result in Numerical computing.