#19906: dilog(RR) should return an element of RR
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   Reporter:  zimmerma          |            Owner:
       Type:  defect            |           Status:  new
   Priority:  minor             |        Milestone:  sage-7.0
  Component:  basic arithmetic  |         Keywords:
  Merged in:                    |          Authors:
  Reviewers:                    |  Report Upstream:  N/A
Work issues:                    |           Branch:
     Commit:                    |     Dependencies:
   Stopgaps:                    |
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 in Sage 6.10:
 {{{
 sage: dilog(-1.0)
 -1/12*pi^2
 sage: dilog(1)
 1/6*pi^2
 sage: dilog(0.5)
 1/12*pi^2 - 1/2*log(2)^2
 }}}
 we should not get symbolic output with floating-point input.

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Ticket URL: <http://trac.sagemath.org/ticket/19906>
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