[Axiom-developer] [#63 bugs Problems raising a UTS to a negative integer power]

[billpage]

Changes 
http://page.axiom-developer.org/zope/mathaction/63BugsProblemsRaisingAUTSToANegativeIntegerPower/diff
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??changed:
-From BillPage Fri Jan 21 23:52:32 -0600 2005
-From: Bill Page
-Date: Fri, 21 Jan 2005 23:52:32 -0600
-Subject: (new) Problems raising a UTS to a negative integer power
-Message-ID: <address@hidden>
-
-
-This is an automated notification sent by Savannah.
-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)
-    _______________________________________________________
-
-[26 more lines...]
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:


??changed:
-
-protected-symbol-warn called with (NIL)
-Example of code trigerring the bug: p:=(1/2+n)::UTS(FRAC INT, 'n, 0)
-(p**(-1))$UTS(FRAC INT, 'n, 0)
-
-          Internal cause: 
-
-    _______________________________________________________
-
-
-The code below raises an unnecessary error. The problem 
-is in sttaylor.spad/powern, where no distinction between rational and integer
-powers are made.
   protected-symbol-warn called with (NIL)

Example of code trigerring the bug:

  \begin{axiom}
  p:=(1/2+n)::UTS(FRAC INT, 'n, 0)
  \end{axiom}
  \begin{axiom}
  (p**(-1))$UTS(FRAC INT, 'n, 0)
  \end{axiom}

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.

??changed:
-
-
-    _______________________________________________________
-
-Follow-up Comments:
-
-
--------------------------------------------------------
-Date: Wed 09/08/2004 at 09:09       By: Martin Rubey <kratt6>
-resolved in patch #3349
-
-
-
-
-
-
-
-
-==============================================================================
-[6 more lines...]
Follow-up Comments::

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

--removed:
-

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