[Maxima] strange behaviour with simple decimals
Andrey G. Grozin
A.G.Grozin at inp.nsk.su
Wed Apr 11 15:40:45 CDT 2007
On Wed, 11 Apr 2007, Jay Belanger wrote:
> If you do calculations in which every step can be carried out
> in the current precision exactly, and yet the answer is off, then I
> think something worth noting is going on.
Exactly! At last I completely agree with you.
"The current precision" means in most cases IEEE double precision. Some
calculations, like 0.5 + 0.25 for example, can be carried out in the
current precision exactly. And they are. Some other calculations, like
1.4^2, cannot be carried out exactly. And they are not.
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