bugAxiom Computer Algebra System - Bugs: bug #9215, box does not work as promised

 
 

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bug #9215: box does not work as promised

Submitter:  Martin Rubey <kratt6>
Submitted:  Fri 04 Jun 2004 08:00:01 AM UTC
   
 
Category:  None Severity:  3 - Normal
Item Group:  code bug Status:  None
Privacy:  Public Assigned to:  None
Originator Name:  kratt6 Open/Closed:  Open
Release:  tla from may 2004 Reproducibility:  None
Fixed Release: 
Error message: 


Example of code trigerring the bug: 

sum(box(i),i=a..b)


Internal cause: 


Sat 12 Jun 2004 04:37:07 PM UTC, comment #2: 
Martin Rubey <kratt6>
Fri 11 Jun 2004 11:06:05 AM UTC, comment #1: 

This was very well explained by William Sit in
http://lists.gnu.org/archive/html/axiom-developer/2004-06/msg00087.html

Therefore, this bug is really identical to bug #9297

Martin Rubey <kratt6>
Fri 04 Jun 2004 08:00:01 AM UTC, original submission:  

box promises that its argument is not evaluated. However this does not work always, it seems:

(1) -> box(sum(i,i=1..n))

         2
        n  + n
   (1)  ------
           2
                                                     Type: Expression Integer

even worse:
(2) -> sum(box(i),i=a..b)

        (b + 1)b - aa - 1
   (2)  -----------------
                2

Maybe I missunderstood the documentation...

Martin Rubey <kratt6>

 

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Depends on the following items: None found

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    Follows 1 latest change.

    Date Changed by Updated Field Previous Value => Replaced by
    2008-11-25 axiom Example of code trigerring the bugsum(box(i),i=a..b) sum(box(i),i=a..b)

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