32bit vs. 64bit

[Sergei Steshenko]

--- On Sat, 3/14/09, Jason Riedy <jason at acm.org> wrote:

> From: Jason Riedy <jason at acm.org>
> Subject: Re: 32bit vs. 64bit
> To: "Jaroslav Hajek" <highegg at gmail.com>
> Cc: bug at octave.org
> Date: Saturday, March 14, 2009, 1:56 PM
> And Jaroslav Hajek writes:
> > Yes, and as Sergei noted, x86_64 actually doesn't
> use guard bits,
> > because it supports quadruple precision (128-bit fp).
> 

Just to make things clear - I only said that AFAIR x86-64 does _not_ use
80 bits numbers, I said nothing about 128 bits.

My  point was that that due to absence of 80 <-> 64 bits conversions here
and there the results might be more stable.

Again, the statements are based on my recollections, i.e. I do not remember
exactly - kind of as after 80 <-> 64 bits conversions :-).

Regards,
  Sergei.