ILOG CPLEX C++ API 9.0 Reference Manual

IloCplex
public IloCplex::PWLFormulation getPWLFormulation()
This method queries the way piecewise linear expressions are represented when
CPLEX automatically transforms them during extraction.
public IloNum getQuality(IloCplex::Quality q,
IloNumVar * var,
IloConstraint * rng)
These method return the requested quality measure.
Some quality measures are related to a variable or a constraint. For example
IloCplex::MaxPrimalInfeas is related to the variable or range constraint where
the maximum infeasibility (bound violation) occurs. If this information is also
requested, pointers to IloNumVar or IloConstraint objects may be passed for
the optional parameters where the relevant variable or range will be written.
public void getRangeSA(IloNumArray lblower,
IloNumArray lbupper,
IloNumArray ublower,
IloNumArray ubupper,
const IloRangeArray con)
This method performs sensistivity analysis for the upper and lower bounds of the
ranged constraints passed in the array con. When the method returns, lblower[i]
and lbupper[i] will contain, respecitively, the lowest and the highest value that the
lower bound of constraint con[i] can assume without affecting the optimality of the
solution. Similarly, ublower[i] and ubupper[i] will contain, respectively, the
lowest and the highest value that the upper bound of the constraint con[i] can assume
without affecting the optimality of the solution. The arrays lblower, lbupper,
ublower, and ubupper will be resized to the size of array con. If any of the
information is not requested, 0 can be passed for the corresponding array parameter.
public void getRay(IloNumArray vals,
IloNumVarArray vars)
This method returns an unbounded direction (also known as a ray) corresponding to the
present basis for an LP that has been determined to be an unbounded problem. CPLEX
puts the the variables of the extracted model into the array vars and it puts the
corresponding values of the unbounded direction into the array vals.
Note:CPLEX resizes these arrays for you.
public IloNum getReducedCost(const IloIntVar var)
This method returns the reduced cost associated with var in the invoking algorithm.
public IloNum getReducedCost(const IloNumVar var)
ILOG CPLEX C++ API 9.0 REFERENCE M ANUAL 66