#19040: defuse bool(x!=0) performance bomb
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Reporter: rws | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: sage-6.9
Component: symbolics | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by vdelecroix):
I agree that the change would be actually good (for the reason why you
created this ticket).
Thoug, for symbolic expression we want to create equations and check their
validity
{{{
sage: cos(x)**2 + sin(x)**2 == 1
cos(x) == sin(x)
sage: bool(_)
True
}}}
The above will not be enough anymore. What would be the new way of
checking? This needs to be emphasized a lot in the documentation as it is
backward incompatible. And I guess it is worth a thread on sage-devel. Not
necessarily right now, it is always good to have concrete propositions.
You should also have a look to `sage/tests/*` where I am sure some of the
things are broken.
--
Ticket URL: <http://trac.sagemath.org/ticket/19040#comment:4>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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