From: Jan Hubicka <jh@suse.cz>
To: Gabriel Dos Reis <gdr@integrable-solutions.net>
Cc: Andreas Schwab <schwab@suse.de>, Jan Hubicka <jh@suse.cz>,
Richard Henderson <rth@redhat.com>,
gcc-patches@gcc.gnu.org, aj@suse.de
Subject: Re: Converting floor to rint
Date: Thu, 07 Nov 2002 05:31:00 -0000 [thread overview]
Message-ID: <20021107133054.GB11315@atrey.karlin.mff.cuni.cz> (raw)
In-Reply-To: <m37kfpv79k.fsf@soliton.integrable-solutions.net>
> Andreas Schwab <schwab@suse.de> writes:
>
> | |> But why the standard don't say that rint function will raise the
> | |> interrupt? I would interpred may as it can behave that way or don't
> | |> have to.
> |
> | Yes, rint is the weaker function.
>
> Thanks. I didn't understand Jan's question in that way. Thanks
> for clarifying.
>
> | The implementation of nearbyint must
> | make sure that no inexact exception is raised, whereas for rint this is
> | not necessary. That means that if you have a round instruction that never
> | raises the exception it can be used to implement both functions.
>
> Yes. Or said differently, rint() may be implemented in terms of
> nearbyint() (+ raising exception where appropriate).
Question is whether I am required to raise it when standard say "may
raise"
Honza
>
> -- Gaby
next prev parent reply other threads:[~2002-11-07 13:31 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-11-05 9:14 Simplify floating point conversions Jan Hubicka
2002-11-05 9:38 ` Richard Henderson
2002-11-05 9:42 ` Jan Hubicka
2002-11-06 1:23 ` Simplify floating point conversions II Jan Hubicka
2002-11-06 3:08 ` Michael Matz
2002-11-06 4:36 ` Jan Hubicka
2002-11-06 9:54 ` Jan Hubicka
2002-11-06 10:09 ` Richard Henderson
2002-11-06 13:11 ` Jan Hubicka
2002-11-06 13:19 ` Jan Hubicka
2002-11-06 13:35 ` Gabriel Dos Reis
2002-11-06 13:36 ` Jan Hubicka
2002-11-06 14:06 ` Gabriel Dos Reis
2002-11-06 14:29 ` Converting floor to rint Jan Hubicka
2002-11-06 14:47 ` Richard Henderson
2002-11-06 14:53 ` Jan Hubicka
2002-11-06 14:55 ` Gabriel Dos Reis
2002-11-07 1:21 ` Jan Hubicka
2002-11-07 1:32 ` Jakub Jelinek
2002-11-07 1:33 ` Gabriel Dos Reis
2002-11-07 1:44 ` Jan Hubicka
2002-11-07 1:52 ` Jakub Jelinek
2002-11-07 1:54 ` Jan Hubicka
2002-11-07 2:04 ` Jan Hubicka
2002-11-07 4:47 ` Gabriel Dos Reis
2002-11-07 4:56 ` Jan Hubicka
2002-11-07 5:14 ` Andreas Schwab
2002-11-07 5:27 ` Gabriel Dos Reis
2002-11-07 5:31 ` Jan Hubicka [this message]
2002-11-07 5:35 ` Andreas Schwab
2002-11-07 5:22 ` Gabriel Dos Reis
2002-11-07 5:43 ` Andreas Schwab
2002-11-07 6:23 ` Gabriel Dos Reis
2002-11-07 7:01 ` Jan Hubicka
2002-11-07 7:18 ` Gabriel Dos Reis
2002-11-06 13:48 ` Simplify floating point conversions III Jan Hubicka
2002-11-06 14:55 ` Richard Henderson
2002-11-07 2:54 ` Simplify floating point conversions IV Jan Hubicka
2002-11-18 15:01 ` Richard Henderson
2002-11-05 11:14 ` Simplify floating point conversions Geoff Keating
2002-11-06 1:09 ` Jan Hubicka
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