#9094: is_square and sqrt for polynomials and fraction fields
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Reporter: robertwb
| Owner: AlexGhitza
Type: enhancement
| Status: needs_work
Priority: major
| Milestone: sage-4.7
Component: algebra
| Keywords:
Author: Robert Bradshaw, Maarten Derickx
| Upstream: N/A
Reviewer: John Cremona, Marco Streng
| Merged:
Work_issues: make general sqrt compatible with lazy reals, or go back to
double code |
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Changes (by robertwb):
* status: needs_review => needs_work
Comment:
* is_square for fraction field elements now always computes a root, even
if it's not needed. This can be quite expensive.
* Why are you writing boilerplate wrappers for all of LazyNamedUnop? Just
do is_square and sqrt if need be.
* Using _parent is just fine, especially for subclasses. No need to incur
the extra expense of a method call.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9094#comment:27>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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