#12220: Updated CBC spkg
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Reporter: ncohen | Owner: ncohen
Type: enhancement | Status: needs_info
Priority: major | Milestone: sage-5.0
Component: linear programming | Keywords: sd35.5, Cernay2012
Work_issues: | Upstream: N/A
Reviewer: | Author: John Perry
Merged: | Dependencies:
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Comment(by john_perry):
I see that `binpacking()` sets the variable to binary, but I don't see any
rounding in any of the backends. I do see that in the `coin_backend` we
have (line 252)
{{{
elif vtype == 0:
self.si.setColLower(variable, 0)
self.si.setInteger(variable)
self.si.setColUpper(variable, 1)
}}}
which sets the binary variable.
If I infer correctly, it's `optimize.py` that should be patched, so that
`binpacking` checks the rounded result, and not a clear `1`?
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12220#comment:61>
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