> I would like to make use of glpk library in my C programme. I have made > some tests of it in Octave and it works great, giving an expected > results. However using "raw" glpk via C gives different, wrong, results.
Looks like you forgot to specify column (i.e. variable) bounds. On api level all variables are fixed at zero by default. > I suspect, that it's a matter of proper parametrisation of the library, > but I am a novice and a real problem may be hiding somewhere else. I > have tried to set the same defaults that glpk has in octave but it > turned out to be a lot of fiddling around and the way to success seems > vague. Can you provide me steps I should perform to make glpk work well > in C as it does in Octave? > To visualize your lp you may call the glp_write_lp routine which writes the problem object to a text file in a human-readable format. For details please see the glpk reference manual included in the distribution tarball. You also may write your lp in GNU MathProg (subset of AMPL) rather than in C and then use glpsol to solve it. _______________________________________________ Help-glpk mailing list [email protected] https://lists.gnu.org/mailman/listinfo/help-glpk
