#15820: Implement sequences of bounded integers
-------------------------------------+-------------------------------------
       Reporter:  SimonKing          |        Owner:
           Type:  enhancement        |       Status:  needs_work
       Priority:  major              |    Milestone:  sage-6.4
      Component:  algebra            |   Resolution:
       Keywords:  sequence bounded   |    Merged in:
  integer                            |    Reviewers:  Simon King
        Authors:  Simon King,        |  Work issues:
  Jeroen Demeyer                     |       Commit:
Report Upstream:  N/A                |  7a0dd469527c8a4f39d8d891703fcf5feecda9a1
         Branch:                     |     Stopgaps:
  u/SimonKing/ticket/15820           |
   Dependencies:  #17195, #17196     |
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Changes (by SimonKing):

 * status:  needs_review => needs_work


Comment:

 I found a bug (probably in slicing):
 {{{
 sage: B1 = BoundedIntegerSequence(8, [0,7])
 sage: B2 = BoundedIntegerSequence(8, [2,1,4])
 sage: B1[0:1]+B2
 <0, 7, 1, 4>
 sage: B1[0:1]
 <0>
 }}}

 My diagnose is that the top bits of the slice (those exceeding the size)
 have not been cleared. This doesn't show when printing it, but
 concatenation does rely on the top bits being cleared.

--
Ticket URL: <http://trac.sagemath.org/ticket/15820#comment:331>
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