getQConstrCPLEX: Access a Specified Quadratic Constraint on the Variables of a CPLEX Problem Object.

Description

Low level interface function to the IBM ILOG CPLEX function CPXgetqconstr. Consult the IBM ILOG CPLEX documentation for more detailed information.

getQConstrCPLEX(env, lp, which)

env

An object of class "'>cplexPtr" as returned by openEnvCPLEX. This is basically a pointer to an IBM ILOG CPLEX environment.

An object of class "'>cplexPtr" as returned by initProbCPLEX. This is basically a pointer to an IBM ILOG CPLEX problem object.

which

An integer specifying which quadratic constraint to return.

If successful a list is returned:

rhs

Righthand-side value of the quadratic constraint. Consult the IBM ILOG CPLEX documentation for more detailed information.

sense

Character specifying the sense of the constraint. Consult the IBM ILOG CPLEX documentation for more detailed information.

linind

Variable indices of the entries of linval. Consult the IBM ILOG CPLEX documentation for more detailed information.

linval

Linear coefficients of the specified constraint. Consult the IBM ILOG CPLEX documentation for more detailed information.

quadrow

Variable indices of the entries of quadval. Consult the IBM ILOG CPLEX documentation for more detailed information.

quadcol

Variable indices of the entries of quadval. Consult the IBM ILOG CPLEX documentation for more detailed information.

quadval

Quadratic coefficients of the specified constraint. Consult the IBM ILOG CPLEX documentation for more detailed information.

otherwise an instance of class "'>cplexError".

Interface to the C function getQConstr which calls the CPLEX function CPXgetqconstr.