CPXchgobjsen

Description

The routine CPXchgobjsen() is used to change the sense of the optimization for a problem, to maximization or minimization.

For problems with a quadratic objective function, changing the objective sense may make the problem unsolvable. Further changes to the quadratic coefficients may then be required to restore the convexity (concavity) of a minimization (maximization) problem.

This routine does not return a result.

void CPXchgobjsen (CPXCENVptr env, CPXLPptr lp, int maxormin);

Arguments

The pointer to the CPLEX environment as returned by CPXopenCPLEX().

A pointer to a CPLEX problem object as returned by CPXcreateprob().

An integer that indicates the new sense of the problem.

CPXchgobjsen (env, lp, CPX_MAX);