CPXXgetnumobjs and CPXgetnumobjs

The routine CPXXgetnumobjs/CPXgetnumobjs returns the number of objectives in the problem instance.

CPXDIM CPXXgetnumobjs( CPXCENVptr env, CPXCLPptr lp)

int CPXgetnumobjs( CPXCENVptr env, CPXCLPptr lp)

Description

The routine CPXXgetnumobjs/CPXgetnumobjs returns the number of objectives in the problem instance.

Note:

The number of objectives is always at least 1. Even an all-zero objective counts as an objective funtion.

Arguments

env: A pointer to the CPLEX environment as returned by CPXXopenCPLEX/CPXopenCPLEX.
lp: A pointer to a CPLEX problem object as returned by CPXXcreateprob/CPXcreateprob.

Return

If the CPLEX problem object or environment does not exist, CPXXgetnumobjs/CPXgetnumobjs returns the value 0 (zero); otherwise, it returns the number objectives in the problem instance.

Example


        numobjectives = CPXgetnumobjs (env, lp);

See also the example multiobj.c in the CPLEX User's Manual and in the standard distribution.