> what is this ??? > > spx_simplex : double-bounded variable 391 has invalid bounds > > I dont undestand
This message means that you set both lower and upper bounds using lpx_set_row_bnds(lp, i, LPX_DB, lb, ub); or lpx_set_col_bnds(lp, j, LPX_DB, lb, ub); and lb >= ub while lb must be strictly less than ub. Note that this error is detected by lpx_simplex, not by lpx_set_xxx_bnds. Variables are numbered as x[1], ..., x[m], x[m+1], ..., x[m+n], where m is the number or rows, n is number of the columns. _______________________________________________ Help-glpk mailing list [email protected] http://lists.gnu.org/mailman/listinfo/help-glpk
