Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!hellgate.utah.edu!cc.utah.edu!rcapener
From: RCAPENER@cc.utah.edu
Newsgroups: comp.lang.lisp
Subject: Re: REAL LISP applications
Message-ID: <66550@cc.utah.edu>
Date: 29 May 90 00:58:33 MDT
References: <1990May24.195449.15510@king.mcs.drexel.edu> <1990May25.221509.21274@evax.arl.utexas.edu> <22308@dartvax.Dartmouth.EDU> <45898@iuvax.cs.indiana.edu>
Lines: 23

In article <45898@iuvax.cs.indiana.edu>, raja@silver.ucs.indiana.edu (Raja Sooriamurthi) writes:
> hugo@griggs.dartmouth.edu (Peter Su) writes:
> 
> 	and of course MACSYMA. Considered by many to be an acid test
> for any lisp system. I don't know of any of the other symbolic math
> packages (Maple, Reduce etc.,  Mathematica is in C), but I suspect some of 
> them may be in Lisp.
> 

You are indeed correct.  REDUCE was originally written in RLISP, an
ALGOL-like version of LISP that was built on top of Standard LISP,
a very minimal LISP sufficient for the purpose.  Standard LISP was
implemented at the University of Utah, and Anthony Hearns used it
to write the first version of REDUCE.  I have heard that there are
implementations of it now in Common LISP, but haven't seen it.  I
believe Maple is written in C.

Another product that nobody has mentioned is InterLeaf, the desktop
publishing system.  It is written in a combination of their own version
of LISP mixed with C.

bob@csulx.weber.edu (csulx was formerly wsccs)