int sym_get_lb_for_new_rhs(sym_environment *env, int cnt, int *new_obj_ind, double *new_obj_val, double *lb_for_new_obj)
This routine is used for a basic sensitivity analysis of the objective function case. It returns a quick lower bound for the problem with a modified objective vector using the information gathered from the branching tree of the original solved problem. Note that, in order to use this feature, the sensitivity_analysis parameter needs to be set before solving the original problem.
sym_environment *env | IN | Pointer to the SYMPHONY environment. |
int cnt | IN | The number of the non zero elements in the new objective coefficients. |
int *new_obj_ind | IN | Array of the column indices of these non zero elements. |
double *new_obj_val | IN | Array of the values of these non zero elements. |
double *lb_for_new_obj | OUT | Pointer to a double indicating the lower bound obtained for the new problem. |
FUNCTION_TERMINATED_NORMALLY | Function invoked successfully. |
FUNCTION_TERMINATED_ABNORMALLY | Function invoked unsuccessfully. |