From: Cyprien Nicolas <cyprien@nicolas.tf>
To: Mark H Weaver <mhw@netris.org>
Cc: 36338@debbugs.gnu.org
Subject: bug#36338: guile-2.2.5 fails to build with -ffast-math
Date: Sun, 7 Jul 2019 15:03:11 +0200 [thread overview]
Message-ID: <772d1c89-b786-8cd3-91f8-dbb94dce38f5@nicolas.tf> (raw)
In-Reply-To: <87lfxnrayy.fsf@netris.org>
On 27/06/2019 04:57, Mark H Weaver wrote:
>
> Guile generally assumes that the underlying C implementation will be
> standards compliant. -Ofast, -ffast-math and related options disregard
> standards compliance. Among other things, -ffast-math implies
> -ffinite-math-only, which generates code that assumes that all floating
> point values are finite. However, there's code in Guile's compiler that
> uses +inf.0 and -inf.0 and expects that they will behave as specified in
> IEEE-754.
>
> So, in summary, I would say that Guile does not support being compiled
> with -Ofast, -ffast-math, or many of the options that -ffast-math
> implies.
Thank you for the clear and detailed explanation. It makes sense.
Cyprien
prev parent reply other threads:[~2019-07-07 13:03 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-23 9:00 bug#36338: guile-2.2.5 fails to build with -ffast-math Cyprien Nicolas
2019-06-27 2:57 ` Mark H Weaver
2019-07-07 13:03 ` Cyprien Nicolas [this message]
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