[Rd] hypot(x,y) instead of pythag(a,b) ?!
Prof Brian D Ripley
Wed, 24 May 2000 14:07:12 +0100 (BST)
On Wed, 24 May 2000, Martin Maechler wrote:
> >>>>> "BDR" == Prof Brian D Ripley <email@example.com> writes:
> BDR> This does all seem to me to be trying to solve a non-existent problem.
> Not according to our own (R core) standards,
> which I thought to be roughly like
> GOLD>> We require ANSI C
> GOLD>> and everything else must be tested for by configure
> GOLD>> (and worked around either be saying (warning) "is not available",
> GOLD>> or by providing own code).
> I think hypot() definitely falls in that class,
> particularly since it's not even POSIX [as of Lewine(1991)]
Still, it is a problem that has not (AFAIK) been reported by anyone, and
there is quite a list of outstanding bugs at R-bugs ....
Brian D. Ripley, firstname.lastname@example.org
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 272860 (secr)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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