[Coin-lpsolver] Bug in getBasis() (was: Bug in RowStatus: Lower vs. Upper Bound)

[Ulrich Spoerlein]

On Tue, 18.10.2005 at 12:01:37 +0200, Ulrich Spörlein wrote:
> I printed all the column and row stats and the basis, the whole document
> is at [1].
> 
> It looks roughly like this:
> getBasis().print() shows these columns
> BLBLLBLLLBLLBLBBBLBBL...
> and I get these stats from getColumnStatus()
> 13133133313313111311...
> 
> So this is fine and corresponds to the definition of the Status enum.
> 
> The rows are different:
> BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBUBBBBUBBBBBBBBBUBB
> vs.
> 111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111311113111111111311
> 
> So getBasis() tells me, some are at the upper bound (which in fact they
> are!) but getRowStatus() is returning 3 which is defined as
> "atLowerBound".

Sorry, I messed this up. The rows are at the *LOWER* bound. So
getRowStatus() is returning the correct results. But the Basis is wrong.

Again, sorry for mixing this up.

Ulrich Spoerlein
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Ok, which part of "Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn."
didn't you understand?