From: Alejandro Colomar <alx@kernel.org>
To: Jakub Wilk <jwilk@jwilk.net>
Cc: "Helge Kreutzmann" <debian@helgefjell.de>,
"Alejandro Colomar" <alx.manpages@gmail.com>,
"Mario Blättermann" <mario.blaettermann@gmail.com>,
linux-man@vger.kernel.org
Subject: Re: Issue in man page clog.3
Date: Wed, 1 Nov 2023 18:08:55 +0100 [thread overview]
Message-ID: <ZUKGJ7RCTTWYJyN6@debian> (raw)
In-Reply-To: <20231101161500.ko2nejsen2o3i4pj@jwilk.net>
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On Wed, Nov 01, 2023 at 05:15:00PM +0100, Jakub Wilk wrote:
> * Helge Kreutzmann <debian@helgefjell.de>, 2023-11-01 14:02:
> > Issue: [-pi,pi] means both -pi and pi are included, this does not make sense, either one must be out of the interval?
>
> The man page is consistent with the C standard, which says the return value
> is "in the interval [−iπ, +iπ] along the imaginary axis".
>
> I think they mean π rounded to the nearest representable value.
> And indeed, the imaginary part of clog(-1 - DBL_EPSILON * I) is -M_PI, and
> the imaginary part of clog(-1 + DBL_EPSILON * I) is +M_PI.
Ahh, thanks a lot, Jakub!
>
> --
> Jakub Wilk
--
<https://www.alejandro-colomar.es/>
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prev parent reply other threads:[~2023-11-01 17:09 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-01 14:02 Issue in man page clog.3 Helge Kreutzmann
2023-11-01 15:00 ` Alejandro Colomar
2023-11-01 15:25 ` Helge Kreutzmann
2023-11-01 16:56 ` G. Branden Robinson
2023-11-01 20:54 ` Alejandro Colomar
2023-11-01 17:08 ` Alejandro Colomar
2023-11-02 2:38 ` Nikolaos Chatzikonstantinou
2023-11-01 16:15 ` Jakub Wilk
2023-11-01 16:24 ` Helge Kreutzmann
2023-11-01 17:08 ` Alejandro Colomar [this message]
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