[Rd] Mathlib

[Prof Brian Ripley]

> X-Priority: 3 (Normal)
> Date: Thu, 02 Mar 2000 11:41:12 +0100 (CET)
> From: Martyn Plummer <plummer@iarc.fr>
> To: R-devel@stat.math.ethz.ch
> Subject: [Rd] Mathlib
> 
> First of all I would like to join the chorus of approval over the release
> of R 1.0.0.  It really is an excellent piece of software. I'm sure you
> will astonish us again with Omega.
> 
> I have a query about Mathlib.  It is such a nice collection of functions
> that it would be nice to use it in other software, not necessarily related
> to R.  Is it possible to build Mathlib separately, and/or install the
> shared object and the header file in a more public place?

It has been possible. Note that the header file has a switch 

/*-- Mathlib as part of R --  undefine this for standalone : */
#define MATHLIB_IN_R

which controls whether R error handling is used.

Now, I suspect that it may not be totally in a state where it can be
used separately in 1.0.0, as this may well not have been tested 
recently. It did work at some stage between 0.90.1 and 0.99.0, as
I tested it during the API changes, but there have been a lot
of changes since, and at least two of those (log1p and pnorm5) have
failed in the standalone case when I tried just now.

The other problem is that some careful configuring would be needed for
the settings of e.g. ISNAN.

Is it worth trying to set up a configure script and Makefile.in to build
a standalone libnmath.a?   I suspect Martyn is suggesting that it is?

-- 
Brian D. Ripley,                  ripley@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 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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