next up previous contents Back to SYMPHONY Home Page
Next: User-written functions of the Up: User-written functions of the Previous: user_find_cuts

user_check_validity_of_cut

int user_check_validity_of_cut(void *user, cut_data *new_cut)

Description:

This function is provided as a debugging tool. Every cut that is to be sent to the LP solver is first passed to this function where the user can independently verify that the cut is valid by testing it against a known feasible solution (usually an optimal one). This is useful for determining why a particular known feasible (optimal) solution was never found. Usually, this is due to an invalid cut being added. See Section 1.12.4 for more on this feature.

Arguments:

tabular1812

Return values:

tabular1814

Invoked from:
Whenever a cut is being sent to the LP.

%


Ted Ralphs
Thu Jun 8 12:44:45 CDT 2000