Re: R-alpha: .Machine object

Ross Ihaka (ihaka@stat.auckland.ac.nz)
Thu, 14 Nov 1996 10:07:10 +1300 (NZDT)


From: Ross Ihaka <ihaka@stat.auckland.ac.nz>
Date: Thu, 14 Nov 1996 10:07:10 +1300 (NZDT)
Message-Id: <199611132107.KAA29572@stat13.stat.auckland.ac.nz>
To: r-testers@stat.math.ethz.ch
Subject: Re: R-alpha: .Machine object
In-Reply-To: <9611130851.AA13085@>
 <9611130851.AA13085@>

Martin Maechler writes:
 > Yes!
 >  
 > [I have been asking for this before the R-alpha list existed...]

We know, we know ... :-)

 > and I fully agree that we only need a few, as Doug and Fritz said,
 > 
 > 	.Machine$ double.eps
 > 	.Machine$ double.neg.eps
 > 	.Machine$ double.xmax
 > 	.Machine$ double.xmin
 > PLUS
 > 	.Machine$ integer.max
 > 
 > 
 > Note that e.g. on SunOS 4.1.4, there's no  float.h

This is an ANSI file (which we use!).  You'll probably find it stashed
away in some totally obvious place.  On our machines it's in

	/usr/local/lang/SC1.0/ansi_include/

(Yeah I know we should get a newer compiler, but we mostly use gcc now).

 > 	 A colleague here at ETH desperately tried/tries to port  R
 > 	 to AIX (IBM Power...) with bib problems:  
 > 
 > 	 'configure' already breaks....

I would love to get access to one of these machines.  I have the
dlopen compatibility library and could possibly get a version of R
going without too much effort.  I'd need about 15Mb of disk and a few
cycles ...  (hint, hint :-).
	Ross
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