From tlumley at u.washington.edu  Tue Aug  5 08:21:10 2003
From: tlumley at u.washington.edu (Thomas Lumley)
Date: Tue Aug  5 16:21:27 2003
Subject: [Rd] RE: [R] ^ operation much slower in R 1.7.1 than in R 1.7.0
	???
In-Reply-To: <MABBLJDICACNFOLGIHJOEEIJDKAA.phgrosjean@sciviews.org>
Message-ID: <Pine.A41.4.44.0308050718200.240674-100000@homer01.u.washington.edu>

On Tue, 5 Aug 2003, Philippe Grosjean wrote:
>
> OK. But I was wondering if people at R-core team, especially those who
> worked on Windows specific aspects, would have in mind some changes they did
> between 1.7.0 and 1.7.1 than can cause this. Since these changes are mainly
> corrections of bugs, the list is hopefully not so long... and it could help
> a lot to have these hints. Thanks very much.

I checked that the slowdown really was happening in "^", which is
Primitive and so fairly direct.  I couldn't find anything remotely
plausible as a cause, though.

My first guess was something involving the methods package and my second
was a compiler change, so I'm 0-2 so far.


	-thomas


[Rd] RE: [R] ^ operation much slower in R 1.7.1 than in R 1.7.0 ???
Thomas Lumley