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polynomial factoring fails #1590

Closed rtoy closed 2 days ago

rtoy commented 2 days ago

Imported from SourceForge on 2024-07-04 20:19:17 Created by *anonymous on 2005-12-28 18:45:18 Original: https://sourceforge.net/p/maxima/bugs/848

factor(x^4-y^4) factor(x^5+y^5)

Maxima 5.9.2 http://maxima.sourceforge.net Using Lisp GNU Common Lisp (GCL) GCL 2.6.7 (aka GCL) Distributed under the GNU Public License. See the file COPYING. Dedicated to the memory of William Schelter. This is a development version of Maxima. The function bug_report() provides bug reporting information. (%i1) factor(x^3-y^3);

Error in FACTOR [or a callee]: Error in TYPE-ERROR-DATUM [or a callee]: The slot CONDITIONS::DATUM is unbound in the object #<CONDITIONS::INTERNAL-TYPE-ERROR.0>.

Please contct pwang@cs.kent.edu to obtain the polymomial package "ppack" that can be included in maxima for distribution.

Paul

rtoy commented 2 days ago

Imported from SourceForge on 2024-07-04 20:19:19 Created by willisbl on 2005-12-30 00:33:07 Original: https://sourceforge.net/p/maxima/bugs/848/#4b0f

Logged In: YES user_id=895922

I don't have this problem with 5.9.2.10cvs:

(%i1) factor(x^3-y^3); (%o1) -(y-x)*(y^2+x*y+x^2) (%i2) factor(x^4-y^4); (%o2) -(y-x)*(y+x)*(y^2+x^2) (%i3) factor(x^5+y^5); (%o3) (y+x)*(y^4-x*y^3+x^2*y^2-x^3*y+x^4) (%i4) build_info(); Maxima version: 5.9.2.10cvs Maxima build date: 12:57 12/20/2005 host type: i686-pc-mingw32 lisp-implementation-type: GNU Common Lisp (GCL) lisp-implementation-version: GCL 2.6.7 (%o4)

Barton

rtoy commented 2 days ago

Imported from SourceForge on 2024-07-04 20:19:22 Created by willisbl on 2005-12-30 00:34:13 Original: https://sourceforge.net/p/maxima/bugs/848/#c97d

Logged In: YES user_id=895922

I don't have this problem with 5.9.2.10cvs:

(%i1) factor(x^3-y^3); (%o1) -(y-x)*(y^2+x*y+x^2) (%i2) factor(x^4-y^4); (%o2) -(y-x)*(y+x)*(y^2+x^2) (%i3) factor(x^5+y^5); (%o3) (y+x)*(y^4-x*y^3+x^2*y^2-x^3*y+x^4) (%i4) build_info(); Maxima version: 5.9.2.10cvs Maxima build date: 12:57 12/20/2005 host type: i686-pc-mingw32 lisp-implementation-type: GNU Common Lisp (GCL) lisp-implementation-version: GCL 2.6.7 (%o4)

Barton

rtoy commented 2 days ago

Imported from SourceForge on 2024-07-04 20:19:26 Created by robert_dodier on 2006-08-15 02:55:55 Original: https://sourceforge.net/p/maxima/bugs/848/#da17

Logged In: YES user_id=501686

Not observed in 5.9.3.99rc1. Closing this report as "works for me".

rtoy commented 2 days ago

Imported from SourceForge on 2024-07-04 20:19:29 Created by robert_dodier on 2006-08-15 02:55:55 Original: https://sourceforge.net/p/maxima/bugs/848/#88b9