#15549: Streamline construction of PARI objects
------------------------------------+------------------------
       Reporter:  pbruin            |        Owner:
           Type:  enhancement       |       Status:  new
       Priority:  minor             |    Milestone:  sage-6.1
      Component:  interfaces        |   Resolution:
       Keywords:  pari performance  |    Merged in:
        Authors:  Peter Bruin       |    Reviewers:
Report Upstream:  N/A               |  Work issues:
         Branch:                    |       Commit:
   Dependencies:  #15461            |     Stopgaps:
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Changes (by {'newvalue': u'Peter Bruin', 'oldvalue': ''}):

 * keywords:   => pari performance
 * dependencies:   => #15461
 * author:   => Peter Bruin


Old description:

> Clean up the construction of PARI objects by inlining some functions.

New description:

 Clean up the construction of PARI objects by inlining some functions and
 initialising the `_refers_to` dictionary only when necessary.

 Before:
 {{{
 sage: %timeit -r 1 pari(0)
 1000000 loops, best of 1: 1.02 us per loop
 }}}
 After:
 {{{
 sage: %timeit -r 1 pari(0)
 1000000 loops, best of 1: 875 us per loop
 }}}

--

--
Ticket URL: <http://trac.sagemath.org/ticket/15549#comment:1>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
and MATLAB

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