- Function GMP::Solution::IsPrimalDegenerated(GMP, solution)¶
GMP::Solution::IsPrimalDegenerated checks whether the
solution for a generated mathematical program, with model type LP, RMIP
or QP, is primal degenerated.
GMP::Solution::IsPrimalDegenerated( GMP, ! (input) a generated mathematical program solution ! (input) a solution )
An element in the set
An integer scalar reference to a solution.
The function returns 1 if the solution is primal degenerated, and 0 otherwise.
A solution is primal degenerated if a basic variable is at a bound, or if a non-equality constraint is basic and at a bound. In that case the dual solution is not unique.
This function will always return 0 if the barrier algorithm (without crossover) of CPLEX was used to solve the problem because the barrier algorithm (without crossover) of CPLEX does not provide a basic solution.