On 2012-06-16, Phuc Luoi phucluoi@gmail.com wrote:

How can I compile and run Maxima with ABCL?

(1) Unpack a Maxima tarball. http://sourceforge.net/projects/maxima and follow links to download page. Look for "Maxima-source".

(2) cd /path/to/maxima-5.27.0

(3) java -jar /path/to/abcl.jar

(4) (configure) ;; you can probably accept defaults for most/all questions

(5) (quit)

(6) cd src

(7) java -jar /path/to/abcl.jar

(8) (require 'asdf)

(9) (asdf:operate 'asdf:load-op :maxima)

(10) (quit)

(11) java -jar /path/to/abcl.jar

(12) (require 'asdf)

(13) (asdf:operate 'asdf:load-op :maxima) ;; yes, same as (9)

(14) (cl-user::run) ;; should bring up Maxima banner & input prompt

Furthermore can I emmbed maxima in a Java Programm with ABCL?

Yes. I've appended an example program. Command line to compile it:

javac -cp /path/to/abcl.jar -d /path/to/compiled/class abcl_maxima.java

To execute it: (you must be in the Maxima src directory)

java -cp /path/to/compiled/class:/path/to/abcl.jar abcl_maxima

I get: (takes a minute or two to load Maxima)

loading Maxima ... finished. x.getClass => class org.armedbear.lisp.Cons x = org.armedbear.lisp.Cons@1748ba8 x.javaInstance => org.armedbear.lisp.Cons@1748ba8 x.javaInstance.getClass => class org.armedbear.lisp.Cons 4 factors of 12341234 factor: 2, multiplicity: 1 factor: 73, multiplicity: 1 factor: 137, multiplicity: 1 factor: 617, multiplicity: 1

Note that all user functions have names which begin with dollar sign. E.g. user function ifactors <==> $IFACTORS in Lisp

If you need help with Lisp programming for Maxima, ask questions on the mailing list. See: http://maxima.sourceforge.net/maximalist.html

Hope this helps, have fun, & good luck.

Robert Dodier

PS. Example program abcl_maxima.java:

// abcl_maxima.java -- example program for calling Maxima from Java via ABCL // copyright 2012 by Robert Dodier // I release this work under terms of the GNU General Public License

import org.armedbear.lisp.Interpreter; import org.armedbear.lisp.Package; import org.armedbear.lisp.Packages; import org.armedbear.lisp.Symbol; import org.armedbear.lisp.Function; import org.armedbear.lisp.LispObject; import org.armedbear.lisp.Fixnum; import org.armedbear.lisp.Bignum; import org.armedbear.lisp.Cons;

public class abcl_maxima { public static void main (String [] args) throws Exception { int a;

if (args.length > 0) a = Integer.parseInt (args [0]); else a = 12341234;

Interpreter I = Interpreter.createInstance (); System.out.print ("loading Maxima ... "); I.eval ("(require 'asdf)"); I.eval ("(asdf:operate 'asdf:load-op :maxima)"); System.out.println ("finished."); Package P = Packages.findPackage ("MAXIMA");

// java.util.List <Symbol> L = P.getAccessibleSymbols (); // for (Symbol S : L) // { // if (P.equals (S.getPackage ())) // System.out.println (S.toString ()); // }

Symbol S = P.findAccessibleSymbol ("$IFACTORS"); Function F = (Function) S.getSymbolFunction (); LispObject x = Bignum.getInstance (a); x = F.execute (x); System.out.println ("x.getClass => " + x.getClass ()); System.out.println ("x = " + x); System.out.println ("x.javaInstance => " + x.javaInstance ()); System.out.println ("x.javaInstance.getClass => " + x.javaInstance () . getClass ());

int n = ((Cons) x).length (); System.out.println ((n - 1) + " factors of " + a);

for (int i = 1; i < n; i++) { Cons x1 = (Cons) ((Cons) x).NTH (i); Fixnum f = (Fixnum) x1.NTH (1); Fixnum m = (Fixnum) x1.NTH (2); System.out.println ("factor: " + f.intValue () + ", multiplicity: " + m.intValue ()); } } }