#17393: Add warning to Expression.simplify_log()
-------------------------------------+-------------------------------------
       Reporter:  mjo                |        Owner:
           Type:  defect             |       Status:  needs_work
       Priority:  major              |    Milestone:  sage-6.5
      Component:  symbolics          |   Resolution:
       Keywords:                     |    Merged in:
        Authors:  Michael Orlitzky   |    Reviewers:  Ralf Stephan
Report Upstream:  N/A                |  Work issues:
         Branch:                     |       Commit:
  u/mjo/ticket/17393                 |  453e74c78803f062cd298bcad0cc5b4b5f2bf0b2
   Dependencies:                     |     Stopgaps:
-------------------------------------+-------------------------------------
Changes (by vbraun):

 * status:  positive_review => needs_work


Comment:

 {{{
 sage -t --long src/sage/symbolic/expression.pyx
 **********************************************************************
 File "src/sage/symbolic/expression.pyx", line 8835, in
 sage.symbolic.expression.Expression.simplify_log
 Failed example:
     f.simplify_log('one')
 Expected:
     1/2*log(t) + log(x) + 2*log(y)
 Got:
     -pi*log(x + 1) + log(x*y)
 **********************************************************************
 File "src/sage/symbolic/expression.pyx", line 8838, in
 sage.symbolic.expression.Expression.simplify_log
 Failed example:
     f.simplify_log('ratios')
 Expected:
     log(sqrt(t)*x*y^2)
 Got:
     -pi*log(x + 1) + log(x*y)
 **********************************************************************
 File "src/sage/symbolic/expression.pyx", line 8841, in
 sage.symbolic.expression.Expression.simplify_log
 Failed example:
     f.simplify_log()
 Expected:
     log(x*y^2) + 1/2*log(t)
 Got:
     -pi*log(x + 1) + log(x*y)
 **********************************************************************
 1 item had failures:
    3 of  31 in sage.symbolic.expression.Expression.simplify_log
     [2265 tests, 3 failures, 21.05 s]
 ----------------------------------------------------------------------
 sage -t --long src/sage/symbolic/expression.pyx  # 3 doctests failed
 }}}

--
Ticket URL: <http://trac.sagemath.org/ticket/17393#comment:3>
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