#16812: use FLINT to speed up Chebyshev T polynomial creation
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       Reporter:  rws                |        Owner:
           Type:  enhancement        |       Status:  needs_work
       Priority:  major              |    Milestone:  sage-6.4
      Component:  symbolics          |   Resolution:
       Keywords:  flint, speedup     |    Merged in:
        Authors:  Ralf Stephan       |    Reviewers:
Report Upstream:  N/A                |  Work issues:
         Branch:                     |       Commit:
  u/rws/use_flint_to_speed_up_chebyshev_t_polynomial_creation|  
61972b5574632e914e178fe211062d0dd0e35b87
   Dependencies:                     |     Stopgaps:
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Comment (by rws):

 Another bug: special values apply only to integer `n`, as `T(1/2, 0)`
 shows, where the formula for `n==0` in `_eval_special_values_()` gives
 complex values, while the correct result is `1/sqrt(2)`. So, assumptions
 have to be checked or the function restricted to `n in ZZ`.

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Ticket URL: <http://trac.sagemath.org/ticket/16812#comment:22>
Sage <http://www.sagemath.org>
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