#12257: 1.0*pi should *not* be pi
----------------------------+------------------------
Reporter: was | Owner: burcin
Type: defect | Status: new
Priority: minor | Milestone: sage-6.4
Component: calculus | Resolution:
Keywords: pynac | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by kcrisman):
Here is another idea. In
[http://www.ginac.de/reference/mul_8cpp_source.html#l00442 the Ginac
source], we have
{{{
00464 } else if (seq_size==1 && overall_coeff.is_equal(_ex1)) {
00465 // *(x;1) -> x
00466 return recombine_pair_to_ex(*(seq.begin()));
}}}
and that could be somehow changed. And the other issue is
[http://www.ginac.de/reference/inifcns__trans_8cpp_source.html#l00303
here]
{{{
00319 if (z.is_equal(*_num0_p)) // sin(0) -> 0
00320 return _ex0;
}}}
so again if there were a way to have Pynac return "the right" zero... I
think this is kind of philosophy difference is at the root of several
little coercion buglets.
--
Ticket URL: <http://trac.sagemath.org/ticket/12257#comment:8>
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