ILOG CPLEX C++ API 9.0 Reference Manual

IloCplex
This method returns the reduced cost associated with var in the invoking algorithm.
public void getReducedCosts(IloNumArray val,
const IloIntVarArray var)
This method puts the reduced costs associated with the numeric variables of the array
var into the array val. The array val is automatically resized to the same length as
array var, and val[i] will contain the reduced cost for variable var[i].
public void getReducedCosts(IloNumArray val,
const IloNumVarArray var)
This method puts the reduced costs associated with the variables in the array var into
the array val. Array val is resized to the same size as array var, and val[i] will
contain the reduced cost for variable var[i].
public void getRHSSA(IloNumArray lower,
IloNumArray upper,
const IloRangeArray cons)
This method performs righthand side sensitivity analysis for the constraints specified in
array cons. The constraints must be of the form cons[i]: expr[i] rel rhs[i].
When this method returns lower[i] and upper[i] will contain the lowest and
highest value rhs[i] can assume without affecting the optimality of the solution. The
arrays lower and upper will be resized to the size of array cons. If any of the
information is not requested, 0 (zero) can be passed for the corresponding array
parameter.
public IloNum getSlack(const IloRange range)
This method returns the slack value associated with constraint range in the current
solution of the invoking algorithm. For a range with finite lower and upper bounds, the
slack value consists of the difference between the expression of the range and its lower
bound.
public void getSlacks(IloNumArray val,
const IloRangeArray con)
This method puts the slack values associated with the constraints indicated by the array
con into the array val. For a ranged constraint with finite lower and upper bounds, the
slack value consists of the difference between the expression in the range and its lower
bound. Array val is resized to the same size as array con, and val[i] will contain
the slack value for constraint con[i].
public IloAlgorithm::Status getStatus()
This method returns the status of the invoking algorithm. For its ILOG CPLEX status,
see the method IloCplex::getCplexStatus.
public IloCplex::Algorithm getSubAlgorithm()
This method returns the algorithm type that was used to solve most recent node of a
MIP.
ILOG CPLEX C++ API 9.0 REFERENCE M ANUAL 67