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From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Paul Eggert <eggert@cs.ucla.edu>
Cc: Dmitry Antipov <dmantipov@yandex.ru>,
	Emacs development discussions <emacs-devel@gnu.org>
Subject: Re: eval proposals
Date: Fri, 06 Jun 2014 13:14:06 -0400	[thread overview]
Message-ID: <jwvvbsermf2.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <5391E989.50203@cs.ucla.edu> (Paul Eggert's message of "Fri, 06 Jun 2014 09:17:13 -0700")

> Choose a power-of-two SPECPDL_SHRINK_FACTOR so that you can do the
> overflow test quickly by division (unsigned right shift) instead.

IIUC this is done once per GC, so speed of this division should be
a complete non-issue.


        Stefan



  parent reply	other threads:[~2014-06-06 17:14 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-06 15:33 eval proposals Dmitry Antipov
2014-06-06 16:17 ` Paul Eggert
2014-06-06 16:59   ` Eli Zaretskii
2014-06-06 17:14   ` Stefan Monnier [this message]
2014-06-06 16:58 ` Stefan Monnier

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