#9964: Document _pari_ and _pari_init_
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Reporter: jdemeyer | Owner: mvngu
Type: defect | Status: new
Priority: blocker | Milestone: sage-4.6
Component: documentation | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Description changed by jdemeyer:
Old description:
> Many Sage objects have {{{_pari_}}} and/or {{{_pari_init_}}} member
> functions. However, it is not at all documented how these are supposed to
> work. Reading the source code gives some hints, but leaves some things
> unexplained, for example:
> * what exactly is the interaction between {{{_pari_}}} and
> {{{_pari_init_}}}. Which of these two functions (or both) should be
> implemented?
> * Why is {{{_pari_init_}}} also used for the GP interpreter {{{Gp}}}?
> * Why must {{{_pari_init_}}} return a string? Is it only because it is
> also used for the GP interpreter or is there a deeper reason?
New description:
Many Sage objects have {{{_pari_}}} and/or {{{_pari_init_}}} member
functions. However, it is not at all documented how these are supposed to
work. Reading the source code gives some hints, but leaves some things
unexplained, for example:
* what exactly is the interaction between {{{_pari_}}} and
{{{_pari_init_}}}. Which of these two functions (or both) should be
implemented?
* Why is {{{_pari_init_}}} also used for the GP interpreter {{{Gp}}}?
* Why must {{{_pari_init_}}} return a string? Is it only because it is
also used for the GP interpreter or is there a deeper reason?
Note also that the patch at #9400 contains important changes to a
{{{_pari_init_}}} function which are completely not understood by the
author.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9964#comment:1>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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