> I wonder how can I get (using API functions) the inverse of the basic > matrix variables (B^-1) after obtaining the optimum of a linear > problem.
The api routine glp_ftran computes y = inv(B) * x for a given vector x, so if you specify x = ej, where ej is j-th unity vector (i.e. j-th column of unity matrix), you can compute inv(B) * ej, which is j-th column of inv(B). Thus, using glp_ftran you can compute entire inv(B) by columns. Similarly, using glp_btran you can compute inv(B) by rows. For details please see chapter "Advanced API Routines" in the GLPK Reference Manual. _______________________________________________ Help-glpk mailing list [email protected] https://lists.gnu.org/mailman/listinfo/help-glpk
