#12845: Incorrect doctest in sage/misc/functional.py
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Reporter: mjo | Owner: burcin
Type: defect | Status: new
Priority: major | Milestone: sage-5.0
Component: symbolics | Keywords:
Work issues: | Report Upstream: N/A
Reviewers: | Authors:
Merged in: | Dependencies:
Stopgaps: |
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We currently have,
{{{
sage: a, b, c = var("a, b, c")
sage: v = vector([a, b, c])
sage: bool(norm(v).simplify_full() == sqrt(a^2 + b^2 + c^2))
True
}}}
which is true enough if a,b,c are real. The current doctest "works"
because somewhere along the line, `simplify_full()` assumes that they're
real. So in effect, this doctest is confirming incorrect behavior.
The proper fix is to explicitly assume that a,b,c are real.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12845>
Sage <http://www.sagemath.org>
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