[Maxima-bugs] [ maxima-Bugs-2085440 ] Factor of Compiled Function error message

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Bugs item #2085440, was opened at 2008-08-31 13:44
Message generated for change (Comment added) made by rvh2007
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Category: Lisp Core - Simplification
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: The Henman (rvh2007)
Assigned to: Nobody/Anonymous (nobody)
Summary: Factor of Compiled Function error  message

Initial Comment:
Try the following.

(%i1) f(x) := x$
(%i2) f(1,2);
Too many arguments supplied to f(x): [1,2]

(%i3) compile(f)$

(%i4) f(1,2);
 Maxima encountered a Lisp error:
Error in MACSYMA-TOP-LEVEL [or a callee]: MACSYMA-TOP-LEVEL [or a callee]
requires less than two arguments.

"The error message tells the user almost nothing. I consider that a bug.

Barton"

Rich Hennessy


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Maxima version: 5.16.2
Maxima build date: 7:44 8/18/2008
host type: i686-pc-mingw32
lisp-implementation-type: GNU Common Lisp 
(GCL)lisp-implementation-version: GCL 2.6.8
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>Comment By: The Henman (rvh2007)
Date: 2008-08-31 13:54

Message:
Logged In: YES 
user_id=2055069
Originator: YES

I think I figured it out, you have to have a function defined and it also
has to be compiled.

this works
(%i1) factor(-hbar^2/(2*m)*diff(f(x),x,2)=E*f(x)-mu*x^4*f(x));
(%o1) -(hbar^2*('diff(f(x),x,2)))/(2*m)=f(x)*(E-mu*x^4)


if f is defined as a function of two or more variables and it is not
compiled then you get this error.
(%i1) f(x,y):=x^2*y;
(%o1) f(x,y):=x^2*y
(%i2) factor(-hbar^2/(2*m)*diff(f(x),x,2)=E*f(x)-mu*x^4*f(x));
Too few arguments supplied to f(x,y):[x] -- an error.  
To debug this try debugmode(true);
 
which is a better error message.

but if you compile f then you get 

(%i1) f(x,y):=x^2*y;
(%o1) f(x,y):=x^2*y

(%i2) compile(f);
Compiling C:/DOCUME~1/RICHAR~1/LOCALS~1/Temp/gazonk_3888_0.lsp.
End of Pass 1.  
End of Pass 2.  
OPTIMIZE levels: Safety=2, Space=3, Speed=3
Finished compiling C:/DOCUME~1/RICHAR~1/LOCALS~1/Temp/gazonk_3888_0.lsp.
(%o2) [f]

(%i3) factor(-hbar^2/(2*m)*diff(f(x),x,2)=E*f(x)-mu*x^4*f(x));
Maxima encountered a Lisp error: Error in MACSYMA-TOP-LEVEL [or a callee]:
MACSYMA-TOP-LEVEL [or a callee] requires more than one argument.
Automatically continuing.
To reenable the Lisp debugger set *debugger-hook* to nil. 

Which is a harder message to debug. I think I may have had a definition
for f after all and it was compiled too since I have a workbook which does
just that and I was playing around with that workbook last night before I
got this error.  So it only happens on compiled functions so far in my
testing.


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