#11513: add _is_numerically_zero() method to symbolic expressions
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Reporter: burcin | Owner: burcin
Type: enhancement | Status: new
Priority: major | Milestone: sage-4.8
Component: symbolics | Keywords: sd35.5
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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Comment(by benjaminfjones):
The `_is_numerically_zero()` has only been used in a few new symbolic
functions, we haven't tested replacing the heavily duplicated test code
that Burcin is talking about with this new method to see if many doctests
fail. My impression is that it is useful to have such a method for
automatic simplifications like e.g. `erf(0)` should return `0` not
`erf(0)`, for instance to address #8983.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11513#comment:10>
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