From octave-sources-request at bevo dot che dot wisc dot edu Fri Nov 22 10:51:57 2002
Subject: Re: a couple of simple functions for Matlab compatibility
From: Paul Kienzle <pkienzle at jazz dot ncnr dot nist dot gov>
To: Rafael Laboissiere <laboissiere at psy dot mpg dot de>
Cc: schraudo at inf dot ethz dot ch, octave-sources@bevo.che.wisc.edu
Date: Fri, 22 Nov 2002 11:51:48 -0500

Nicol, Lambert W is available from the matlab symbolic toolbox under the
name lambertw.  

http://www.mathworks.com/access/helpdesk/help/toolbox/symbolic/lambertw.shtml

My attitude is that if a function exists somewhere in Matlab then we should
try to support the matlab interface.  Do you mind renaming it to lambertw?

Everything in octave-forge must be available under an open source license

	http://www.opensource.org/docs/definition.php

or placed in the public domain.  GPL or BSD are preferred but there are others

	http://www.opensource.org/licenses/index.html

Rafael, assuming Nicol doesn't object, would you care to add the missing
functions to the appropriate places in octave-forge?

Thanks,

Paul Kienzle
pkienzle at users dot sf dot net

On Fri, Nov 22, 2002 at 09:45:53AM -0600, Rafael Laboissiere wrote:
> * schraudo at inf dot ethz dot ch <schraudo@inf.ethz.ch> [2002-11-22 06:24]:
> 
> > while I'm at it, I also wrote a number of trivial to simple functions that
> > improve octave's compatibility with Matlab.  These were created without
> > reference to the corresponding Matlab code, so there should be no copyright
> > issues.  Feel free to include them in future releases of octave.
> 
> Besides betaln, besselh1, ans, besselh2, lbeta, and ndims, the functions
> that you implemented exist already in octave-forge (or even in octave 2.1,
> as for besselh, lower, and upper):
> 
> $ tar tfvz /var/tmp/compat.tgz | perl -ne íf(m{/([^/]*)\.m}){print "which
> $1\n"}'| octave
> besselh is the dynamically-linked function from the file
> /usr/lib/octave/2.1.36/oct/i386-pc-linux-gnu/besselh.oct
> which: `betaln' is undefined
> factor is the user-defined function from the file
> /usr/share/octave/2.1.36/site/m/octave-forge/specfun/factor.m
> isequal is the user-defined function from the file
> /usr/share/octave/2.1.36/site/m/octave-forge/general/isequal.m
> isfinite is a built-in mapper function
> isprime is the user-defined function from the file
> /usr/share/octave/2.1.36/site/m/octave-forge/specfun/isprime.m
> isreal is a built-in function
> primes is the user-defined function from the file
> /usr/share/octave/2.1.36/site/m/octave-forge/specfun/primes.m
> repmat is the user-defined function from the file
> /usr/share/octave/2.1.36/site/m/octave-forge/general/repmat.m
> which: `besselh1' is undefined
> which: `ans' is undefined
> which: `besselh2' is undefined
> gammaln is a built-in mapper function
> which: `lbeta' is undefined
> lower is the user-defined function from the file
> /usr/share/octave/2.1.36/m/strings/lower.m
> nchoosek is the user-defined function from the file
> /usr/share/octave/2.1.36/site/m/octave-forge/specfun/nchoosek.m
> which: `ndims' is undefined
> upper is the user-defined function from the file
> /usr/share/octave/2.1.36/m/strings/upper.m
> 
> 
> You might be interested in merging/donating your code to the octave-forge
> project.
> 
> -- 
> Rafael Laboissiere
>