rtoy
commented
4 months ago Imported from SourceForge on 2024-07-02 07:14:11 Created by robert_dodier on 2009-03-07 15:39:35 Original: https://sourceforge.net/p/maxima/bugs/1612/#867c
Looks like the problem is due to combination of bugs, one in Maxima and one in the Windows implementation of GCL. (1) The eigenvalues function is automatically loaded the first time it is referenced. Maxima should suppress the prompt when loading the file. (2) Windows GCL has a broken function READ-CHAR-NO-HANG: it always returns NIL. So Maxima thinks that it needs to print a prompt (to tell the user to enter more input).
Probably the easiest thing is to tell Maxima to suppress the prompt while loading the file. Then the bug in READ-CHAR-NO-HANG might have no effect.
By the way, I see multiple %i input prompts. To the original poster: are you seeing %o or %i prompts?
Imported from SourceForge on 2024-07-02 07:14:10 Created by dmaj26 on 2009-03-05 11:04:04 Original: https://sourceforge.net/p/maxima/bugs/1612
----------------------------------------------------Maxima version: 5.17.0 Maxima build date: 19:8 12/4/2008 host type: i686-pc-mingw32 lisp-implementation-type: GNU Common Lisp (GCL) lisp-implementation-version: GCL 2.6.8 ----------------------------------------------------
a:matrix([1,3],[1,-1]);eigenvalues(a);
causes empty %o:s both in wxMaxima and xMaxima. load(eigen) solves the problem. '? eivals' says:
The package `eigen.mac' is loaded automatically when `eigenvalues' or `eigenvectors' is referenced. If `eigen.mac' is not already loaded, `load ("eigen")' loads it. After loading, all functions and variables in the package are available.
Shouldn't eigen.mac be autoloaded? Otherwise I would expect the output:
%o eigenvalues(a)