[Maxima-bugs] [ maxima-Bugs-3425863 ] Problem in LISP with times function in sym

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Bugs item #3425863, was opened at 2011-10-19 12:19
Message generated for change (Comment added) made by crategus
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Category: Lisp Core
Group: None
Status: Open
Resolution: None
Priority: 5
Private: Yes
Submitted By: Annick Valibouze  (valibouze)
Assigned to: Nobody/Anonymous (nobody)
Summary: Problem in LISP with times function in sym

Initial Comment:
Good morning dear collegues,

I'm the author of the package "symmetries" of maxima (in maxima/share/sym/)

A new strange bug with LISP appears :
=====
(%i49) resolvante: lineaire$
(%i50) resolvante(x^3-6,x,x1+2*x2+3*x3,[x1,x2,x3]);
" resolvante lineaire " 
Maxima encountered a Lisp error:

EVAL: undefined function TIMES

Automatically continuing.
To reenable the Lisp debugger set *debugger-hook* to nil.
================
the function resolvante apply a function of the file maxima/share/sym/resolv1.lsp (joined) when the variable "resolvante" is affected to " lineaire").
The function " times" (not TIMES) appears two times in file maxima/share/sym/resolv1.lsp 

With the preceding versions of maxima this problem does not exists. The function resolvante (with lineaire) was ok.
I use maxima under Sage
See bellow "bug_report()" informations :
========
(%i7) bug_report();
...
-------------------------------------------------------------
Maxima version: 5.13.0
Maxima build date: 15:23 7/11/2008
host type: i686-apple-darwin9.2.0
lisp-implementation-type: CLISP
lisp-implementation-version: 2.46 (2008-07-02) (built on bsd.local [10.95.224.68])

-------------------------------------------------------------


What do you think about ?

I work about a conference on Evariste Galois (National Celebration ...) , 
I need to make some computations, as the (linear) Galois resolvent, and I have'nt many time. 

Thank to help me.

Sincerly yours, Annick Valibouze

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>Comment By: Dieter Kaiser (crategus)
Date: 2011-10-19 23:17

Message:
I have observed this bug in even older version Maxima 5.9, too.

Maxima does not know a function or macro with the name times. I had a look
at the code and I have tried to insert the function mul at two places. With
this change I get a result:

(%i4) resolvante: lineaire$

(%i5) resolvante(x^3-6,x,x1+2*x2+3*x3,[x1,x2,x3]);
" resolvante lineaire " 
6 
5 
4 
3 
2 
1 
(%o5) y^6+972

I do not know if the result is correct and I do not know the algorithm.
But if the functions times is supposed to multiply the arguments, than mul
is the correct replacement in the file reslov1.lisp.

By the way: When loading the functions of the package I get a lot of
compiler warnings. There might be more problems.

Dieter Kaiser

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