#8857: lcm over QQ[x] broken
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Reporter: burcin | Owner: AlexGhitza
Type: defect | Status: needs_work
Priority: major | Milestone: sage-6.1
Component: basic arithmetic | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Changes (by tscrim):
* status: needs_review => needs_work
* commit: fdfe08a9265043fb6d5a357f2599ce5db23cd8c3 =>
* branch: u/mmezzarobba/ticket/8857 =>
Comment:
I think that this is very counter-intuitive behavior and is inconsistent.
Compare:
{{{
sage: R.<x> = ZZ['x']
sage: R(2^31).lcm(2*x + 1)
4294967296*x + 2147483648
sage: R(2^31).lcm(1)
2147483648
sage: QQ(2^31).lcm(QQ(1))
2147483648
sage: R.<x,y> = QQ['x,y']
sage: R(2^31).lcm(2*x + 1)
4294967296*x + 2147483648
sage: R(2^31).lcm(1)
2147483648
}}}
with
{{{
sage: R.<x> = QQ['x']
sage: R(2^31).lcm(2*x + 1)
x + 1/2
}}}
However, I do think that this should have a doctest nevertheless.
--
Ticket URL: <http://trac.sagemath.org/ticket/8857#comment:9>
Sage <http://www.sagemath.org>
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