IloIntVar

An instance of this class represents a constrained integer variable in a Concert Technology model. If you are looking for a class of numeric variables that may assume integer values and may be relaxed to assume floating-point values, then consider the class IloNumVar. If you are looking for a class of binary decision variables (that is, variables that assume only the values 0 (zero) or 1 (one), then consider the class IloBoolVar.

Bounds of an Integer Variable

The lower and upper bound of an instance of this class is an integer.

If you are looking for a symbol to specify an infinite bound, that is, no lower or upper bound, consider IloIntMin or IloIntMax.

What Is Extracted

An instance of IloIntVar is extracted by IloCP or IloSolver as an instance of IlcIntVar.

An instance of IloIntVar is extracted by IloCplex as a column representing a numeric variable of type Int with bounds as specified by IloIntVar.

Most member functions in this class contain assert statements. For an explanation of the macro NDEBUG (a way to turn on or turn off these assert statements), see the concept Assert and NDEBUG.

Note

When numeric bounds are given to an integer variable (an instance of IloIntVar or IloNumVar with Type = Int) in the constructors or via a modifier (such as setUB, setLB, setBounds), they are inwardly rounded to an integer value. LB is rounded up and UB is rounded down.

This constructor creates an empty handle. You must initialize it before you use it.

This constructor creates a handle object from a pointer to an implementation object.

Method Summary
`public IloNumVarI *`	`getImpl() const`
`public IloNum`	`getLB() const`
`public IloInt`	`getMax() const`
`public IloInt`	`getMin() const`
`public IloNum`	`getUB() const`
`public`	`IloIntVar()`
`public`	`IloIntVar(IloNumVarI * impl)`
`public`	`IloIntVar(IloEnv env, IloInt vmin=0, IloInt vmax=IloIntMax, const char * name=0)`
`public`	`IloIntVar(const IloAddNumVar & var, IloInt lowerBound=0, IloInt upperBound=IloIntMax, const char * name=0)`
`public`	`IloIntVar(const IloEnv env, const IloIntArray values, const char * name=0)`
`public`	`IloIntVar(const IloAddNumVar & var, const IloIntArray values, const char * name=0)`
`public`	`IloIntVar(const IloNumVar var)`
`public`	`IloIntVar(const IloIntRange coll, const char * name=0)`
`public void`	`setBounds(IloInt lb, IloInt ub) const`
`public void`	`setLB(IloNum min) const`
`public void`	`setMax(IloInt max) const`
`public void`	`setMin(IloInt min) const`
`public void`	`setPossibleValues(const IloIntArray values) const`
`public void`	`setUB(IloNum max) const`

Inherited Methods from `IloIntExprArg`
`getImpl, IloIntExprArg, IloIntExprArg`

Inherited Methods from `IloNumExprArg`
`getImpl, IloNumExprArg, IloNumExprArg`

Inherited Methods from `IloExtractable`
`asConstraint, asIntExpr, asModel, asNumExpr, asObjective, asVariable, end, getEnv, getId, getImpl, getName, getObject, IloExtractable, isConstraint, isIntExpr, isModel, isNumExpr, isObjective, isVariable, removeFromAll, setLocation, setName, setObject`

This constructor creates an instance of IloIntVar like this:

IloNumVar(env, vmin, vmax, ILOINT, name);

This constructor creates an instance of IloIntVar like this:

IloNumVar(column, lowerBound, upperBound, ILOINT, name);

Not for use with CP Optimizer.

This constructor calls upon its corresponding IloNumVar constructor.

Not for use with CP Optimizer.

This constructor creates a new handle on var if it is of type ILOINT. Otherwise, an exception is thrown.

This constructor creates an instance of IloIntVar from the given collection

This constructor creates an instance of IloIntVar from the given collection.

Not for use with CP Optimizer.

This member function returns a pointer to the implementation object of the invoking handle.

This member function returns the lower bound of the invoking variable.

This member function returns the maximal value of the invoking variable.

This member function returns the minimal value of the invoking variable.

This member function returns the upper bound of the invoking variable.

This member function sets lb as the lower bound and ub as the upper bound of the invoking numeric variable.

Note

The member function setBounds notifies Concert Technology algorithms about the change of bounds in this numeric variable.

This member function sets min as the lower bound of the invoking variable.

Note

The member function setLB notifies Concert Technology algorithms about the change of bounds in this numeric variable.

This member function set the maximal value of the variable to max.

Note

The member function setMax notifies Concert Technology algorithms about the change of bounds in this numeric variable.

This member function set the minimal value of the variable to min.

Note

The member function setMin notifies Concert Technology algorithms about the change of bounds in this numeric variable.

This member function sets values as the domain of the invoking integer variable. It is available only for constraint programming optimizers, such as CP Optimizer.

Note

The member function setPossibleValues notifies Concert Technology algorithms about the change of bounds in this numeric variable.

This member function sets max as the upper bound of the invoking variable.

Note

The member function setUB notifies Concert Technology algorithms about the change of bounds in this numeric variable.

Class IloIntVar