[Rd] R-devel on FreeBSD: Support for C99 complex type is required

Prof Brian Ripley ripley at stats.ox.ac.uk
Tue Feb 8 22:10:59 CET 2011

On Tue, 8 Feb 2011, Rainer Hurling wrote:

> On 07.02.2011 23:45 (UTC+1), Prof Brian Ripley wrote:
>> A follow-up on this.
>> Cygwin has recently[*] added support for C99 complex math, taken from
>> NetBSD with code that is very similar to that from Steven Moshier
>> available via http://www.moshier.net/c9x_readme.html.
>> That code isn't entirely right, especially not at the cuts on the
>> inverse functions where C99 mandates what cut is used (and neither glibc
>> nor Mac OS X have it correct).
>> I would expect that the current R-devel (I mean an SVN checkout now)
>> should build on your platform, substituting the missing functions by
>> ones based on earlier code. There may be a few more tweaks required, but
>> I have corrected several errors in the versions FreeBSD would have used
>> in R 2.12.1.
> On FreeBSD 9.0-CURRENT (amd64) I have done a
>  svn co https://svn.r-project.org/R/trunk r-devel/R
> and after that
>  configure --without-recommended-packages
> The configure script does not complain any more about missing C99 complex 
> support. I was able to build and install R (without recommended packages).
> Starting R and doing examples on ?complex seems to work correct.
> sessionInfo()
> R version 2.13.0 Under development (unstable) (2011-02-08 r54279)
> Platform: x86_64-unknown-freebsd9.0 (64-bit)
> locale:
> [1] de_DE.ISO8859-15/de_DE.ISO8859-15/C/C/de_DE.ISO8859-15/de_DE.ISO8859-15
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
> loaded via a namespace (and not attached):
> [1] tools_2.13.0
> Thank you very much for this work. Will it exist in some way in the next 
> release?

Just to be clear, the next release will almost certainly be 2.12.2 
(currently R-patched).  That will use pre-C99 complex as 2.12.1 did, 
but with several bugs fixed.  Then we would expect a 2.13.0 in April, 
and that will require C99 complex in the compiler plus some version of 
the current substitutes for csin etc.

My sysadmins have updated a FreeBSD virtual machine for me (to 
8.2-rc3): hopefully I will be able to test R-devel on it in future.

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

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