#17849: substitute_function should not evaluate expression
-------------------------+----------------------------
Reporter: rws | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.6
Component: symbolics | Keywords:
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
-------------------------+----------------------------
One expects `substitute_function` to not do anything except exchanging
parts of expressions but
{{{
sage: ex = sin(x) + atan2(0,0,hold=True)
sage: ex.substitute_function(sin,cos)
...
RuntimeError: arctan2_eval(): arctan2(0,0) encountered
sage: ex = sin(x) + hypergeometric([1, 1], [2], -1)
sage: ex
hypergeometric((1, 1), (2,), -1) + sin(x)
sage: ex.substitute_function(sin,cos)
AttributeError: 'SubstituteFunction' object has no attribute 'tuple'
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/17849>
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/d/optout.
