Updates:
Labels: -WrongResult EasyToFix
Comment #5 on issue 2261 by asmeurer: (1/x).subs(x, 0) is nan instead of oo
or zoo
http://code.google.com/p/sympy/issues/detail?id=2261
I bisected this to
commit ca8179f982940d7ceb3124570dfd67e2cb9ec1fa
Author: Chris Smith <[email protected]>
Date: Mon Apr 18 03:50:16 2011 +0545
revert 2130: subs-based evalf behavior
The issue 2130 test is now failing again as was added
as an XFAIL test.
Tweaking of _eval_nseries and the transfor methods was needed to
make them watch for an unbounded result. (In _eval_nseries, == was
also replaced with 'is' where appropriate and an unused import
of oo was removed.)
Tests were added with reference to the original issues
in which the NaN behavior was introduced and then discussed
about why it should be removed.
which XFAILed the above limit, but did not add a test for the 1/0 issue.
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