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

[Prof Brian D Ripley]

On Tue, 5 Aug 2003, Philippe Grosjean wrote:

> I propose to move this thread to R-devel...
>
> Prof. Brian Ripley wrote:
> >And are you able to give an explanation?  For example, did you compile
> >each under the same compiler system?
>
> I just noticed that behaviour yesterday, and had not much time yet to
> investigate it. I compiled 1.7.0 myself (but compared with the binary
> provided on CRAN; no changes). I used the 1.7.1 binary provided on CRAN. I
> know these binaries are not supported, so we (Windows users) will have to
> look at that by ourselve. Indeed yes, I'll first compile 1.7.1 with the same
> compiler I used for 1.7.0.
>
> >I doubt if this is worth R-core's time to pursue, so over to interested
> >users to find an explanation and fix.
>
> 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.

No idea from me, and the effect is not seen on other platforms.

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595