#15200: _evalf_ handling of backends
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   Reporter:  eviatarbach  |            Owner:
       Type:  enhancement  |           Status:  new
   Priority:  major        |        Milestone:  sage-5.12
  Component:  symbolics    |         Keywords:
  Merged in:               |          Authors:
  Reviewers:               |  Report Upstream:  N/A
Work issues:               |           Branch:
     Commit:               |     Dependencies:
   Stopgaps:               |
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 As per Burcin, with the option of the `algorithm` keyword for `_evalf_` in
 #12289,

 {{{
 ATM, if you implement different backends, you need to write a lot of
 boilerplate code in _evalf_() to parse the algorithm argument, do the
 right thing if it is not given etc. Can we have a default _evalf_
 method, which dispatches to _evalf_<system>_ methods if they exist and
 raise error if not? Perhaps we can also figure out how to annotate
 these methods to indicate if they support arbitrary precision
 evaluation or not.
 }}}

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Ticket URL: <http://trac.sagemath.org/ticket/15200>
Sage <http://www.sagemath.org>
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