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 Submitted by : (unknown) at: 2007-11-17T22:59:57-08:00 (15 years ago) Name : Axiom Version : default friCAS-20090114 Axiom-20050901 OpenAxiom-20091012 OpenAxiom-20110220 OpenAxiom-Release-141 Category : Axiom Aldor Interface Axiom Compiler Axiom Library Axiom Interpreter Axiom Documentation Axiom User Interface building Axiom from source lisp system MathAction Doyen CD Reduce Axiom on Windows Axiom on Linux Severity : critical serious normal minor wishlist Status : open closed rejected not reproducible fix proposed fixed somewhere duplicate need more info Optional subject :   Optional comment :

It relates to:

  bugs #10312, project Axiom Computer Algebra System


LATEST MODIFICATIONS of bugs #10312:

  Posted by: Bill Page <billpage1>
Posted on: 2005-01-22 05:51 (Canada/Eastern)

Status:                    None -> transferred


OVERVIEW of bugs #10312:

  URL:

http://savannah.nongnu.org/bugs/?func=detailitem&item_id=10312


Summary
Problems raising a UTS to a negative integer power
Project
Axiom Computer Algebra System
Submitted by
kratt6
Submitted on
Tue 09/07/2004 at 14:28
Category
algebra
Severity
5 - Average
Item Group
code bug
Status
transferred
Privacy
Public
Assigned to
billpage1
Originator Name

Originator Email --

Open/Closed
Open

Release --

Reproducibility
None

Fixed Release --

Error message
>> Error detected within library code:

** rational power of coefficient undefined protected-symbol-warn called with (NIL)

Example of code trigerring the bug:

axiom
p:=(1/2+n)::UTS(FRAC INT, 'n, 0)
 (1)
Type: UnivariateTaylorSeries?(Fraction(Integer),n,0)

axiom
(p**(-1))\$UTS(FRAC INT, 'n, 0)
The function ** is not implemented in UnivariateTaylorSeries(
Fraction(Integer),n,0) .

## Internal cause:

The code raises an unnecessary error. The problem is in sttaylor.spad/powern, where no distinction between rational and integer powers are made.

The fix is easy. In fact, I just realize that the problem does not exist in SUPS, so we can just take the definition there. I'll submit a patch tomorrow.

  Date: Wed 09/08/2004 at 09:09
By: Martin Rubey <kratt6>
resolved in patch #3349


property change --billpage, Mon, 24 Jan 2005 22:22:18 -0600 reply
Category: => Axiom Library Status: => open

property change --kratt6, Sun, 20 Mar 2005 11:58:11 -0600 reply
Severity: normal => serious

apparently resolved in this version --billpage, Wed, 30 Mar 2005 01:08:10 -0600 reply
axiom
)version
Value = "FriCAS 2010-12-08 compiled at Tuesday April 5, 2011 at 13:07:45 "

please confirm --billpage, Wed, 30 Mar 2005 01:09:00 -0600 reply
Status: open => testing

resolved in patch-45 --billpage, Sat, 05 Nov 2005 22:27:50 -0600 reply
Status: testing => closed

 Subject:   Be Bold !! ( 15 subscribers )