#9706: Symbolic Chebyshev polynomials
-------------------------------------+-------------------------------------
Reporter: maldun | Owner: burcin, maldun
Type: enhancement | Status: needs_work
Priority: minor | Milestone: sage-5.13
Component: symbolics | Resolution:
Keywords: orthogonal | Merged in:
polynomials, symbolics | Reviewers: Burcin Erocal, Travis
Authors: Stefan Reiterer, | Scrimshaw, Stefan Reiterer
Travis Scrimshaw | Work issues:
Report Upstream: N/A | Commit:
Branch: | Stopgaps:
Dependencies: |
-------------------------------------+-------------------------------------
Changes (by jdemeyer):
* status: needs_review => needs_work
Comment:
More doctests are needed, this still doesn't work:
{{{
sage: chebyshev_T(1/2, 0)
---------------------------------------------------------------------------
NameError Traceback (most recent call
last)
<ipython-input-2-c142cc68c50b> in <module>()
----> 1 chebyshev_T(Integer(1)/Integer(2), Integer(0))
/usr/local/src/sage-5.13.beta1/local/lib/python2.7/site-
packages/sage/functions/orthogonal_polys.pyc in __call__(self, n, x)
554 return self._eval_(n,x) # Let eval methode decide
which is best
555 else: # Consider OrthogonalPolynomial as symbol
--> 556 return super(OrthogonalPolynomial,self).__call__(n,x)
557
558
/usr/local/src/sage-5.13.beta1/local/lib/python2.7/site-
packages/sage/symbolic/function.so in
sage.symbolic.function.BuiltinFunction.__call__
(sage/symbolic/function.cpp:8126)()
/usr/local/src/sage-5.13.beta1/local/lib/python2.7/site-
packages/sage/symbolic/function.so in
sage.symbolic.function.Function.__call__
(sage/symbolic/function.cpp:5531)()
/usr/local/src/sage-5.13.beta1/local/lib/python2.7/site-
packages/sage/functions/orthogonal_polys.pyc in _eval_(self, *args)
493 if not is_Expression(args[-1]):
494 try:
--> 495 return self._evalf_(*args)
496 except AttributeError:
497 pass
/usr/local/src/sage-5.13.beta1/local/lib/python2.7/site-
packages/sage/functions/orthogonal_polys.pyc in _evalf_(self, *args,
**kwds)
641 precision = step_parent.prec()
642 except AttributeError:
--> 643 precision = RR.prec()
644
645 from sage.libs.mpmath.all import call as mpcall
NameError: global name 'RR' is not defined
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/9706#comment:83>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sage-trac.
For more options, visit https://groups.google.com/groups/opt_out.
