[Clp] Setting equality constraints in CLP/OSI

[Paul De La Musica]

Hi,

  I am testing out a small problem with known solution by modifying
build.cpp in the OSI example directory. My modified problem has a couple of
equality constraints of the form

xi-xj=L

which I implemented using the pair

xi-xj <= L and -xi+xj <= -L

Somehow, the program keeps telling me that optimized solution cannot be
found. I reduced the number of equality constraints to one and it worked
fine.

Is there an example on how to set equality constraints?

Anything else I should do besides checking code?

Paul
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