If you are licensed to use the ILOG CPLEX Mixed Integer Optimizer, the routine CPXcopyctype() copies information about variable types in a mixed integer programming application (MIP).

If you are licensed to use the ILOG CPLEX Barrier Optimizer, the routines CPXcopyqsep() and CPXcopyquad() are for copying information about quadratic objective coefficients in a convex quadratic programming application (QP).