From: Stefan Monnier <monnier@iro.umontreal.ca>
To: emacs-devel@gnu.org
Cc: Paul Eggert <eggert@cs.ucla.edu>
Subject: Re: [Emacs-diffs] master 605f901: Prefer memcpy and memset to doing it by hand
Date: Fri, 05 Feb 2016 08:25:11 -0500 [thread overview]
Message-ID: <jwv1t8rtho0.fsf-monnier+emacsdiffs@gnu.org> (raw)
In-Reply-To: <E1aRUQf-0003kP-6V@vcs.savannah.gnu.org> (Paul Eggert's message of "Fri, 05 Feb 2016 00:39:17 +0000")
> + if (XLI (init) == 0)
> + memset (p->contents, 0, XFASTINT (length) * sizeof p->contents[0]);
> + else
> + for (ptrdiff_t i = 0; i < XFASTINT (length); i++)
> + p->contents[i] = init;
FWIW, I much prefer keeping just the loop, over using this "if+memset"
which seems like an obvious case or too-early-optimization.
Stefan
next parent reply other threads:[~2016-02-05 13:25 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20160205003917.14369.86929@vcs.savannah.gnu.org>
[not found] ` <E1aRUQf-0003kP-6V@vcs.savannah.gnu.org>
2016-02-05 13:25 ` Stefan Monnier [this message]
2016-02-05 22:40 ` [Emacs-diffs] master 605f901: Prefer memcpy and memset to doing it by hand Paul Eggert
2016-02-07 17:53 ` John Wiegley
2016-02-07 21:24 ` Paul Eggert
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