CPXXgetqconstrslack and CPXgetqconstrslack

The routine CPXXgetqconstrslack/CPXgetqconstrslack is used to access the slack values for a range of the quadratic constraints of a quadratically constrained program.

int CPXXgetqconstrslack( CPXCENVptr env, CPXCLPptr lp, double * qcslack, CPXDIM begin, CPXDIM end )

int CPXgetqconstrslack( CPXCENVptr env, CPXCLPptr lp, double * qcslack, int begin, int end )

Description

The routine CPXXgetqconstrslack/CPXgetqconstrslack is used to access the slack values for a range of the quadratic constraints of a quadratically constrained program. The beginning and end of the range must be specified. The slack values returned consist of the righthand side minus the constraint activity level.

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.
qcslack: An array to receive the values of the slack or surplus variables for each of the constraints. This array must be of length at least (end - begin + 1). If successful, qcslack[0] through qcslack[end-begin] contain the values of the slacks.
begin: An integer specifying the beginning of the range of slack values to be returned.
end: An integer specifying the end of the range of slack values to be returned.

Return

The routine returns 0 (zero) on success and nonzero if an error occurs.

Example


 status = CPXgetqconstrslack (env, lp, qcslack, 0, CPXgetnumqconstrs(env,lp)-1);