From: Stefan Monnier <monnier+lists/caml/news/@tequila.cs.yale.edu>
To: caml-list@inria.fr
Subject: Re: bug in floating point implementation ?
Date: 25 Feb 1999 11:57:28 -0500 [thread overview]
Message-ID: <5ln222a0av.fsf@tequila.cs.yale.edu> (raw)
In-Reply-To: <19990225131027.37364@pauillac.inria.fr>
>>>>> "Xavier" == Xavier Leroy <Xavier.Leroy@inria.fr> writes:
> The Intel x86 has an interesting quirk: it computes internally in
> extended precision (80 bits), and rounds to double precision (64 bits)
> only when storing a result in memory. This means that in a piece of
But you can make it work in 64bit-mode (or 32bit-mode for that matter)
at which point the discrepencies between true-real 64bit and x86-64bit become
very small (mostly due to the exponent still allowing a wider range).
Of course, there might be good reasons for not using this mode-switch.
Stefan
next prev parent reply other threads:[~1999-02-26 12:15 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-02-25 0:43 Shyjan Mahamud
1999-02-25 12:10 ` Xavier Leroy
1999-02-25 16:57 ` Stefan Monnier [this message]
1999-03-09 3:24 ` mahamud
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