#13427: Numerical noise causing sage/numerical/optimize.py to fail on SPARC
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Reporter: drkirkby | Owner: jason, jkantor
Type: defect | Status: new
Priority: major | Milestone: sage-5.4
Component: numerical | Resolution:
Keywords: solaris, glpk | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Comment (by drkirkby):
There is indeed another maximum, and the function will find it if the
range is set from 7 to 8, rather than 0 to 8.
{{{
sage: find_local_maximum(fast_float(8*e^ (-x)*sin(x) - 1, x), 0, 8)
(1.5791755355586758, 0.78539816111340355)
sage: find_local_maximum(fast_float(8*e^ (-x)*sin(x) - 1, x), 7, 8)
(-0.9951835373923219, 7.0685835822289791)
}}}
So perhaps the test does need two changes.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13427#comment:4>
Sage <http://www.sagemath.org>
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