From: "M. Edward (Ed) Borasky" <znmeb@...>
Date: 2007-09-01T00:24:39+09:00
Subject: Re: 0.06 == 0.06 returns false in Ruby?

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Kyle Schmitt wrote:
> On 8/30/07, doug meyer <doug.meyer@sigeps.org> wrote:
>> There is also a class called BigDecimal (or something like that) if
>> you want to have really accurate numbers and no floating-point errors.
> 
> A warning on things like BigDecimal.
> Unless I'm mistaken it's still stored in twos compliment, which means
> you'll still end up with the same sort of floating point problems
> (albeit further down), and the same numbers that you can't express
> exactly with a normal float, can't be expressed exactly with a
> BigDecimal.
> 
> You'd think some fixed point math libraries would help, but be
> careful, because many of those _also_ store in twos compliment.
> 
> --Kyle
> 
> 
IIRC BigDecimal is in fact stored in (pregnant pause) Binary Coded
Decimal. But I should check that.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.7 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iD8DBQFG2DKp8fKMegVjSM8RAsTQAKCNicl4roW3uh7LWLERNMxbtL0dnQCdHTAY
/Y2wWjyVegtTECn6Ur32v30=
=hAqx
-----END PGP SIGNATURE-----