localsolver.LSModel Class Reference

Detailed Description

Mathematical optimization model.

A model is composed of expressions (some of which are decisions), organized as a tree. Then, some expressions of the model can be constrained or optimized. Once your optimization model is created and closed, the solver can be launched to resolve it. Note that you cannot modify a model which has been closed: you must reopen-it (with LSModel::Open()) or instantiate another LocalSolver environment to optimize another model.

See Also

LSExpression, LSOperator

Public Member Functions
LocalSolver	GetLocalSolver ()
	Returns the LocalSolver object associated to this model.
LSExpression	CreateConstant (long value)
	Creates a constant expression representing the given value.
LSExpression	CreateConstant (double value)
	Creates a constant expression representing the given value.
LSExpression	CreateNativeFunction (LSNativeFunction function)
	Creates a native function.
LSExpression	CreateExpression (LSOperator op)
	Creates an expression of the given type.
LSExpression	CreateExpression (LSOperator op, LSExpression expr0)
	Creates an expression of the given type, with the given operand.
LSExpression	CreateExpression (LSOperator op, LSExpression expr0, LSExpression expr1)
	Creates an expression of the given type, with the given ordered operands.
LSExpression	CreateExpression (LSOperator op, LSExpression expr0, LSExpression expr1, LSExpression expr2)
	Creates an expression of the given type, with the given ordered operands.
LSExpression	Bool ()
	Creates a boolean decision.
LSExpression	Float (double min, double max)
	Creates a float decision.
LSExpression	Int (long min, long max)
	Creates an integer decision.
LSExpression	Sum ()
	Creates a sum expression.
LSExpression	Sum (IEnumerable< LSExpression > operands)
	Creates a sum expression.
LSExpression	Sum (params LSExpression[] operands)
	Creates a sum expression.
LSExpression	Sum (long a)
	Creates a sum expression.
LSExpression	Sum (double a)
	Creates a sum expression.
LSExpression	Sum (LSExpression a, LSExpression b)
	Creates a sum expression.
LSExpression	Sum (long a, LSExpression b)
	Creates a sum expression.
LSExpression	Sum (LSExpression a, long b)
	Creates a sum expression.
LSExpression	Sum (double a, LSExpression b)
	Creates a sum expression.
LSExpression	Sum (LSExpression a, double b)
	Creates a sum expression.
LSExpression	Sub (LSExpression a, LSExpression b)
	Creates a substraction expression.
LSExpression	Sub (long a, LSExpression b)
	Creates a substraction expression.
LSExpression	Sub (LSExpression a, long b)
	Creates a substraction expression.
LSExpression	Sub (double a, LSExpression b)
	Creates a substraction expression.
LSExpression	Sub (LSExpression a, double b)
	Creates a substraction expression.
LSExpression	Prod ()
	Creates a product expression.
LSExpression	Prod (IEnumerable< LSExpression > operands)
	Creates a product expression.
LSExpression	Prod (params LSExpression[] operands)
	Creates a product expression.
LSExpression	Prod (long a)
	Creates a product expression.
LSExpression	Prod (double a)
	Creates a product expression.
LSExpression	Prod (LSExpression a, LSExpression b)
	Creates a product expression.
LSExpression	Prod (LSExpression a, long b)
	Creates a product expression.
LSExpression	Prod (long a, LSExpression b)
	Creates a product expression.
LSExpression	Prod (LSExpression a, double b)
	Creates a product expression.
LSExpression	Prod (double a, LSExpression b)
	Creates a product expression.
LSExpression	Max ()
	Creates a maximum expression.
LSExpression	Max (IEnumerable< LSExpression > operands)
	Creates a maximum expression.
LSExpression	Max (params LSExpression[] operands)
	Creates a maximum expression.
LSExpression	Max (long a)
	Creates a maximum expression.
LSExpression	Max (double a)
	Creates a maximum expression.
LSExpression	Max (LSExpression a, LSExpression b)
	Creates a maximum expression.
LSExpression	Max (LSExpression a, long b)
	Creates a maximum expression.
LSExpression	Max (long a, LSExpression b)
	Creates a maximum expression.
LSExpression	Max (LSExpression a, double b)
	Creates a maximum expression.
LSExpression	Max (double a, LSExpression b)
	Creates a maximum expression.
LSExpression	Min ()
	Creates a minimum expression.
LSExpression	Min (IEnumerable< LSExpression > operands)
	Creates a minimum expression.
LSExpression	Min (params LSExpression[] operands)
	Creates a minimum expression.
LSExpression	Min (long a)
	Creates a minimum expression.
LSExpression	Min (double a)
	Creates a minimum expression.
LSExpression	Min (LSExpression a, LSExpression b)
	Creates a minimum expression.
LSExpression	Min (LSExpression a, long b)
	Creates a minimum expression.
LSExpression	Min (long a, LSExpression b)
	Creates a minimum expression.
LSExpression	Min (LSExpression a, double b)
	Creates a minimum expression.
LSExpression	Min (double a, LSExpression b)
	Creates a minimum expression.
LSExpression	Eq (LSExpression a, LSExpression b)
	Creates an equality expression.
LSExpression	Eq (LSExpression a, long b)
	Creates an equality expression.
LSExpression	Eq (long a, LSExpression b)
	Creates an equality expression.
LSExpression	Eq (LSExpression a, double b)
	Creates an equality expression.
LSExpression	Eq (double a, LSExpression b)
	Creates an equality expression.
LSExpression	Neq (LSExpression a, LSExpression b)
	Creates a disequality expression.
LSExpression	Neq (LSExpression a, long b)
	Creates a disequality expression.
LSExpression	Neq (long a, LSExpression b)
	Creates a disequality expression.
LSExpression	Neq (LSExpression a, double b)
	Creates a disequality expression.
LSExpression	Neq (double a, LSExpression b)
	Creates a disequality expression.
LSExpression	Geq (LSExpression a, LSExpression b)
	Creates an inequality expression greater than or equal to.
LSExpression	Geq (LSExpression a, long b)
	Creates an inequality expression greater than or equal to.
LSExpression	Geq (long a, LSExpression b)
	Creates an inequality expression greater than or equal to.
LSExpression	Geq (LSExpression a, double b)
	Creates an inequality expression greater than or equal to.
LSExpression	Geq (double a, LSExpression b)
	Creates an inequality expression greater than or equal to.
LSExpression	Leq (LSExpression a, LSExpression b)
	Creates an inequality expression less than or equal to.
LSExpression	Leq (LSExpression a, long b)
	Creates an inequality expression less than or equal to.
LSExpression	Leq (long a, LSExpression b)
	Creates an inequality expression less than or equal to.
LSExpression	Leq (LSExpression a, double b)
	Creates an inequality expression less than or equal to.
LSExpression	Leq (double a, LSExpression b)
	Creates an inequality expression less than or equal to.
LSExpression	Gt (LSExpression a, LSExpression b)
	Creates an inequality expression greater than.
LSExpression	Gt (LSExpression a, long b)
	Creates an inequality expression greater than.
LSExpression	Gt (long a, LSExpression b)
	Creates an inequality expression greater than.
LSExpression	Gt (LSExpression a, double b)
	Creates an inequality expression greater than.
LSExpression	Gt (double a, LSExpression b)
	Creates an inequality expression greater than.
LSExpression	Lt (LSExpression a, LSExpression b)
	Creates an inequality expression less than.
LSExpression	Lt (LSExpression a, long b)
	Creates an inequality expression less than.
LSExpression	Lt (long a, LSExpression b)
	Creates an inequality expression less than.
LSExpression	Lt (LSExpression a, double b)
	Creates an inequality expression less than.
LSExpression	Lt (double a, LSExpression b)
	Creates an inequality expression less than.
LSExpression	If (LSExpression a, LSExpression b, LSExpression c)
	Creates a ternary conditionnal expression.
LSExpression	If (LSExpression a, LSExpression b, long c)
	Creates a ternary conditionnal expression.
LSExpression	If (LSExpression a, long b, LSExpression c)
	Creates a ternary conditionnal expression.
LSExpression	If (LSExpression a, long b, long c)
	Creates a ternary conditionnal expression.
LSExpression	If (LSExpression a, LSExpression b, double c)
	Creates a ternary conditionnal expression.
LSExpression	If (LSExpression a, double b, LSExpression c)
	Creates a ternary conditionnal expression.
LSExpression	If (LSExpression a, double b, double c)
	Creates a ternary conditionnal expression.
LSExpression	Not (LSExpression a)
	Creates a NOT expression.
LSExpression	And ()
	Creates an AND expression.
LSExpression	And (IEnumerable< LSExpression > operands)
	Creates an AND expression.
LSExpression	And (params LSExpression[] operands)
	Creates an AND expression.
LSExpression	And (LSExpression a, LSExpression b)
	Creates an AND expression.
LSExpression	Or ()
	Creates a OR expression.
LSExpression	Or (IEnumerable< LSExpression > operands)
	Creates a OR expression.
LSExpression	Or (params LSExpression[] operands)
	Creates a OR expression.
LSExpression	Or (LSExpression a, LSExpression b)
	Creates a OR expression.
LSExpression	Xor ()
	Creates a XOR expression.
LSExpression	Xor (IEnumerable< LSExpression > operands)
	Creates a XOR expression.
LSExpression	Xor (params LSExpression[] operands)
	Creates a XOR expression.
LSExpression	Xor (LSExpression a, LSExpression b)
	Creates a XOR expression.
LSExpression	Abs (LSExpression a)
	Creates an absolute value expression.
LSExpression	Dist (LSExpression a, LSExpression b)
	Creates a distance expression.
LSExpression	Dist (LSExpression a, long b)
	Creates a distance expression.
LSExpression	Dist (long a, LSExpression b)
	Creates a distance expression.
LSExpression	Dist (LSExpression a, double b)
	Creates a distance expression.
LSExpression	Dist (double a, LSExpression b)
	Creates a distance expression.
LSExpression	Div (LSExpression a, LSExpression b)
	Creates a division expression.
LSExpression	Div (LSExpression a, long b)
	Creates a division expression.
LSExpression	Div (long a, LSExpression b)
	Creates a division expression.
LSExpression	Div (LSExpression a, double b)
	Creates a division expression.
LSExpression	Div (double a, LSExpression b)
	Creates a division expression.
LSExpression	Mod (LSExpression a, LSExpression b)
	Creates a modulo expression.
LSExpression	Mod (LSExpression a, long b)
	Creates a modulo expression.
LSExpression	Mod (long a, LSExpression b)
	Creates a modulo expression.
LSExpression	Array ()
	Creates an array expression.
LSExpression	Array (IEnumerable< LSExpression > operands)
	Creates an array expression.
LSExpression	Array (IEnumerable< long > operands)
	Creates an array expression.
LSExpression	Array (IEnumerable< double > operands)
	Creates an array expression.
LSExpression	Array (params LSExpression[] operands)
	Creates an array expression.
LSExpression	Array (params long[] operands)
	Creates an array expression.
LSExpression	Array (params double[] operands)
	Creates an array expression.
LSExpression	At (LSExpression arrayExpr, params LSExpression[] indicesExpr)
	Creates a "at" expression.
LSExpression	At (LSExpression arrayExpr, long index)
	Creates a "at" expression.
LSExpression	Scalar (LSExpression a, LSExpression b)
	Creates a scalar product expression between 2 arrays.
LSExpression	Ceil (LSExpression a)
	Creates a ceil expression.
LSExpression	Floor (LSExpression a)
	Creates a floor expression.
LSExpression	Round (LSExpression a)
	Creates a round expression.
LSExpression	Sqrt (LSExpression a)
	Creates a square root expression.
LSExpression	Log (LSExpression a)
	Creates a natural logarithm expression.
LSExpression	Exp (LSExpression a)
	Creates an exponential expression.
LSExpression	Pow (LSExpression a, LSExpression b)
	Creates a power expression.
LSExpression	Pow (LSExpression a, long b)
	Creates a power expression.
LSExpression	Pow (long a, LSExpression b)
	Creates a power expression.
LSExpression	Pow (LSExpression a, double b)
	Creates a power expression.
LSExpression	Pow (double a, LSExpression b)
	Creates a power expression.
LSExpression	Cos (LSExpression a)
	Creates a cosine expression.
LSExpression	Sin (LSExpression a)
	Creates a sine expression.
LSExpression	Tan (LSExpression a)
	Creates a tangent expression.
LSExpression	Piecewise (LSExpression abscissae, LSExpression ordinates, LSExpression x)
	Creates a piecewise linear expression.
LSExpression	List (long a)
	Creates a list variable.
LSExpression	Count (LSExpression a)
	Creates a count expression.
LSExpression	IndexOf (LSExpression a, long b)
	Creates an indexOf expression.
LSExpression	IndexOf (LSExpression a, LSExpression b)
	Creates an indexOf expression.
LSExpression	Partition ()
	Creates a partition expression.
LSExpression	Partition (params LSExpression[] operands)
	Creates a partition expression.
LSExpression	Disjoint ()
	Creates a disjoint expression.
LSExpression	Disjoint (params LSExpression[] operands)
	Creates a disjoint expression.
LSExpression	Function (LSNativeFunction func)
	Creates a function expression.
LSExpression	Call ()
	Creates a call expression.
LSExpression	Call (LSExpression expr0)
	Creates a call expression.
LSExpression	Call (LSExpression expr0, LSExpression expr1)
	Creates a call expression.
LSExpression	Call (LSExpression expr0, LSExpression expr1, LSExpression expr2)
	Creates a call expression.
LSExpression	Call (params LSExpression[] operands)
	Creates a call expression.
LSExpression	Call (IEnumerable< LSExpression > operands)
	Creates a call expression.
int	GetNbExpressions ()
	Gets the number of expressions added to this model.
LSExpression	GetExpression (int exprIndex)
	Gets the expression with the given index in this model.
LSExpression	GetExpression (string name)
	Gets the expression with the given name.
int	GetNbDecisions ()
	Gets the number of decisions in the model.
LSExpression	GetDecision (int decisionIndex)
	Gets the decision with the given index.
void	AddConstraint (LSExpression expr)
	Adds the given expression to the list of constraints.
void	Constraint (LSExpression expr)
	Shortcut for addConstraint(expr).
void	RemoveConstraint (LSExpression expr)
	Removes the given expression from the list of constraints.
void	RemoveConstraint (int constraintIndex)
	Removes the constraint at the given position in the list of constraints.
int	GetNbConstraints ()
	Gets the number of constraints added to this model.
LSExpression	GetConstraint (int constraintIndex)
	Gets the constraint with the given index.
void	AddObjective (LSExpression expr, LSObjectiveDirection direction)
	Adds the given expression to the list of objectives to optimize.
void	Minimize (LSExpression expr)
	Shortcut for addObjective(expr, OD_Minimize).
void	Maximize (LSExpression expr)
	Shortcut for addObjective(expr, OD_Maximize).
void	RemoveObjective (int objectiveIndex)
	Removes the objective at the given position in the list of objectives.
int	GetNbObjectives ()
	Gets the number of objectives added to this model.
LSExpression	GetObjective (int objectiveIndex)
	Gets the objective with the given index.
LSObjectiveDirection	GetObjectiveDirection (int objectiveIndex)
	Gets the direction of the objective with the given index.
int	GetNbOperands ()
	Gets the number of operands in the model.
void	Close ()
	Closes the model.
void	Open ()
	Opens or reopens the model.
bool	IsClosed ()
	Returns true if the model is closed, false otherwise.
override string	ToString ()
	Returns a string representation of this model.

Member Function Documentation

LocalSolver localsolver.LSModel.GetLocalSolver

(

)

Returns the LocalSolver object associated to this model.

Returns

LocalSolver object

LSExpression localsolver.LSModel.CreateConstant

(

long

value

)

Creates a constant expression representing the given value.

Only allowed in state LSState::Modeling. Note that if a constant has been already created with the same value, this method can return the same expression, but it is not guaranteed. The exact behavior is implementation defined.

Parameters

value

Value of the constant.

Returns

Created constant expression.

LSExpression localsolver.LSModel.CreateConstant

(

double

value

)

Creates a constant expression representing the given value.

Only allowed in state LSState::Modeling. Note that if a constant has been already created with the same value, this method can return the same expression, but it is not guaranteed. The exact behavior is implementation defined.

Parameters

value

Value of the constant

Returns

Created constant expression.

LSExpression localsolver.LSModel.CreateNativeFunction

(

LSNativeFunction

function

)

Creates a native function.

Once you instanciated it, you have to pass arguments to your function and call it. For that, you have to create expressions of type LSOperator::Call. The first operand must be your native function. The other operands must be LSExpressions. Their value will be made accessible to your native function through the native context.

Note 1: Most of the time your native function will be called when the solver is in state LSState::Running. Do not attempt to call any method of the solver (to retrieve statistics, values of LSExpressions or whatever) in that state or an exception will be thrown. The only accessible function is LocalSolver::Stop().

Note 2: Your functions must be thread-safe. According to the "nbThreads" parameter, LocalSolver can be multi-threaded. In that case, your native functions must be thread safe. If you cannot guarantee the thread-safety of your code, we strongly recommend you to limit the search of LocalSolver to one thread with LSParam::SetNbThreads.

Parameters

function

Native function to call

Returns

The expression associated to the function.

See Also

LSOperator.NativeFunction

Since version 6.0

LSExpression localsolver.LSModel.CreateExpression

(

LSOperator

op

)

Creates an expression of the given type.

The expression is created without operand. Only allowed in state LSState::Modeling. This method cannot be used to create constants: use LSModel::CreateConstant(long) or LSModel::CreateConstant(double) instead.

Parameters

op	Type of expression to create.

Returns

Created expression.

LSExpression localsolver.LSModel.CreateExpression	(	LSOperator	op,
		LSExpression	expr0
	)

Creates an expression of the given type, with the given operand.

Only allowed in state LSState::Modeling. Useful for creating unary expressions. The operand can be a double, an integer or a previously declared LSExpression.

Template Parameters

T0	type of the operand to add. Types allowed: constant types or LSExpression.

Parameters

op	Type of expression to create.
expr0	Operand 0.

Returns

Created expression.

LSExpression localsolver.LSModel.CreateExpression	(	LSOperator	op,
		LSExpression	expr0,
		LSExpression	expr1
	)

Creates an expression of the given type, with the given ordered operands.

Only allowed in state LSState.Modeling. Useful for creating binary expressions. The operands can be doubles, integers or previously declared LSExpressions. It is also possible to use this method with iterators. In that case, expr0 and expr1 must be iterators of the same type, pointing respectively to the initial and final positions of the operands

Template Parameters

T0	type of the operand to add. Types allowed: constant types, LSExpression or iterator.
T1	type of the operand to add. Types allowed: constant types, LSExpression or iterator.

Parameters

op	Type of expression to create.
expr0	Operand 0.
expr1	Operand 1.

Returns

Created expression.

LSExpression localsolver.LSModel.CreateExpression	(	LSOperator	op,
		LSExpression	expr0,
		LSExpression	expr1,
		LSExpression	expr2
	)

Creates an expression of the given type, with the given ordered operands.

Only allowed in state LSState::Modeling. Useful for creating ternary expressions (in particular, LSOperator.If expressions). The operands can be doubles, integers or previously declared LSExpressions.

Template Parameters

T0	type of the operand to add. Types allowed: constant types or LSExpression.
T1	type of the operand to add. Types allowed: constant types or LSExpression.
T2	type of the operand to add. Types allowed: constant types or LSExpression.

Parameters

op	Type of expression to create.
expr0	Operand 0.
expr1	Operand 1.
expr2	Operand 2.

Returns

Created expression.

LSExpression localsolver.LSModel.Bool

(

)

Creates a boolean decision.

Binary decision with domain [0, 1].

See Also

LSOperator.Bool

Since version 5.5

LSExpression localsolver.LSModel.Float	(	double	min,
		double	max
	)

Creates a float decision.

Decision variable with domain [min, max].

See Also

LSOperator.Float

Since version 5.5

LSExpression localsolver.LSModel.Int	(	long	min,
		long	max
	)

Creates an integer decision.

Decision variable with domain [min, max].

See Also

LSOperator.Int

Since version 5.5

LSExpression localsolver.LSModel.Sum

(

)

Creates a sum expression.

See Also

LSOperator.Sum

Since version 5.5

LSExpression localsolver.LSModel.Sum

(

IEnumerable< LSExpression >

operands

)

Creates a sum expression.

See Also

LSOperator.Sum

Since version 5.5

LSExpression localsolver.LSModel.Sum

(

params LSExpression[]

operands

)

Creates a sum expression.

See Also

LSOperator.Sum

Since version 5.5

LSExpression localsolver.LSModel.Sum

(

long

a

)

Creates a sum expression.

See Also

LSOperator.Sum

Since version 5.5

LSExpression localsolver.LSModel.Sum

(

double

a

)

Creates a sum expression.

See Also

LSOperator.Sum

Since version 5.5

LSExpression localsolver.LSModel.Sum	(	LSExpression	a,
		LSExpression	b
	)

Creates a sum expression.

See Also

LSOperator.Sum

Since version 5.5

LSExpression localsolver.LSModel.Sum	(	long	a,
		LSExpression	b
	)

Creates a sum expression.

See Also

LSOperator.Sum

Since version 5.5

LSExpression localsolver.LSModel.Sum	(	LSExpression	a,
		long	b
	)

Creates a sum expression.

See Also

LSOperator.Sum

Since version 5.5

LSExpression localsolver.LSModel.Sum	(	double	a,
		LSExpression	b
	)

Creates a sum expression.

See Also

LSOperator.Sum

Since version 5.5

LSExpression localsolver.LSModel.Sum	(	LSExpression	a,
		double	b
	)

Creates a sum expression.

See Also

LSOperator.Sum

Since version 5.5

LSExpression localsolver.LSModel.Sub	(	LSExpression	a,
		LSExpression	b
	)

Creates a substraction expression.

See Also

LSOperator.Sub

Since version 5.5

LSExpression localsolver.LSModel.Sub	(	long	a,
		LSExpression	b
	)

Creates a substraction expression.

See Also

LSOperator.Sub

Since version 5.5

LSExpression localsolver.LSModel.Sub	(	LSExpression	a,
		long	b
	)

Creates a substraction expression.

See Also

LSOperator.Sub

Since version 5.5

LSExpression localsolver.LSModel.Sub	(	double	a,
		LSExpression	b
	)

Creates a substraction expression.

See Also

LSOperator.Sub

Since version 5.5

LSExpression localsolver.LSModel.Sub	(	LSExpression	a,
		double	b
	)

Creates a substraction expression.

See Also

LSOperator.Sub

Since version 5.5

LSExpression localsolver.LSModel.Prod

(

)

Creates a product expression.

See Also

LSOperator.Prod

Since version 5.5

LSExpression localsolver.LSModel.Prod

(

IEnumerable< LSExpression >

operands

)

Creates a product expression.

See Also

LSOperator.Prod

Since version 5.5

LSExpression localsolver.LSModel.Prod

(

params LSExpression[]

operands

)

Creates a product expression.

See Also

LSOperator.Prod

Since version 5.5

LSExpression localsolver.LSModel.Prod

(

long

a

)

Creates a product expression.

See Also

LSOperator.Prod

Since version 5.5

LSExpression localsolver.LSModel.Prod

(

double

a

)

Creates a product expression.

See Also

LSOperator.Prod

Since version 5.5

LSExpression localsolver.LSModel.Prod	(	LSExpression	a,
		LSExpression	b
	)

Creates a product expression.

See Also

LSOperator.Prod

Since version 5.5

LSExpression localsolver.LSModel.Prod	(	LSExpression	a,
		long	b
	)

Creates a product expression.

See Also

LSOperator.Prod

Since version 5.5

LSExpression localsolver.LSModel.Prod	(	long	a,
		LSExpression	b
	)

Creates a product expression.

See Also

LSOperator.Prod

Since version 5.5

LSExpression localsolver.LSModel.Prod	(	LSExpression	a,
		double	b
	)

Creates a product expression.

See Also

LSOperator.Prod

Since version 5.5

LSExpression localsolver.LSModel.Prod	(	double	a,
		LSExpression	b
	)

Creates a product expression.

See Also

LSOperator.Prod

Since version 5.5

LSExpression localsolver.LSModel.Max

(

)

Creates a maximum expression.

See Also

LSOperator.Max

Since version 5.5

LSExpression localsolver.LSModel.Max

(

IEnumerable< LSExpression >

operands

)

Creates a maximum expression.

See Also

LSOperator.Max

Since version 5.5

LSExpression localsolver.LSModel.Max

(

params LSExpression[]

operands

)

Creates a maximum expression.

See Also

LSOperator.Max

Since version 5.5

LSExpression localsolver.LSModel.Max

(

long

a

)

Creates a maximum expression.

See Also

LSOperator.Max

Since version 5.5

LSExpression localsolver.LSModel.Max

(

double

a

)

Creates a maximum expression.

See Also

LSOperator.Max

Since version 5.5

LSExpression localsolver.LSModel.Max	(	LSExpression	a,
		LSExpression	b
	)

Creates a maximum expression.

See Also

LSOperator.Max

Since version 5.5

LSExpression localsolver.LSModel.Max	(	LSExpression	a,
		long	b
	)

Creates a maximum expression.

See Also

LSOperator.Max

Since version 5.5

LSExpression localsolver.LSModel.Max	(	long	a,
		LSExpression	b
	)

Creates a maximum expression.

See Also

LSOperator.Max

Since version 5.5

LSExpression localsolver.LSModel.Max	(	LSExpression	a,
		double	b
	)

Creates a maximum expression.

See Also

LSOperator.Max

Since version 5.5

LSExpression localsolver.LSModel.Max	(	double	a,
		LSExpression	b
	)

Creates a maximum expression.

See Also

LSOperator.Max

Since version 5.5

LSExpression localsolver.LSModel.Min

(

)

Creates a minimum expression.

See Also

LSOperator.Min

Since version 5.5

LSExpression localsolver.LSModel.Min

(

IEnumerable< LSExpression >

operands

)

Creates a minimum expression.

See Also

LSOperator.Min

Since version 5.5

LSExpression localsolver.LSModel.Min

(

params LSExpression[]

operands

)

Creates a minimum expression.

See Also

LSOperator.Min

Since version 5.5

LSExpression localsolver.LSModel.Min

(

long

a

)

Creates a minimum expression.

See Also

LSOperator.Min

Since version 5.5

LSExpression localsolver.LSModel.Min

(

double

a

)

Creates a minimum expression.

See Also

LSOperator.Min

Since version 5.5

LSExpression localsolver.LSModel.Min	(	LSExpression	a,
		LSExpression	b
	)

Creates a minimum expression.

See Also

LSOperator.Min

Since version 5.5

LSExpression localsolver.LSModel.Min	(	LSExpression	a,
		long	b
	)

Creates a minimum expression.

See Also

LSOperator.Min

Since version 5.5

LSExpression localsolver.LSModel.Min	(	long	a,
		LSExpression	b
	)

Creates a minimum expression.

See Also

LSOperator.Min

Since version 5.5

LSExpression localsolver.LSModel.Min	(	LSExpression	a,
		double	b
	)

Creates a minimum expression.

See Also

LSOperator.Min

Since version 5.5

LSExpression localsolver.LSModel.Min	(	double	a,
		LSExpression	b
	)

Creates a minimum expression.

See Also

LSOperator.Min

Since version 5.5

LSExpression localsolver.LSModel.Eq	(	LSExpression	a,
		LSExpression	b
	)

Creates an equality expression.

See Also

LSOperator.Eq

Since version 5.5

LSExpression localsolver.LSModel.Eq	(	LSExpression	a,
		long	b
	)

Creates an equality expression.

See Also

LSOperator.Eq

Since version 5.5

LSExpression localsolver.LSModel.Eq	(	long	a,
		LSExpression	b
	)

Creates an equality expression.

See Also

LSOperator.Eq

Since version 5.5

LSExpression localsolver.LSModel.Eq	(	LSExpression	a,
		double	b
	)

Creates an equality expression.

See Also

LSOperator.Eq

Since version 5.5

LSExpression localsolver.LSModel.Eq	(	double	a,
		LSExpression	b
	)

Creates an equality expression.

See Also

LSOperator.Eq

Since version 5.5

LSExpression localsolver.LSModel.Neq	(	LSExpression	a,
		LSExpression	b
	)

Creates a disequality expression.

See Also

LSOperator.Neq

Since version 5.5

LSExpression localsolver.LSModel.Neq	(	LSExpression	a,
		long	b
	)

Creates a disequality expression.

See Also

LSOperator.Neq

Since version 5.5

LSExpression localsolver.LSModel.Neq	(	long	a,
		LSExpression	b
	)

Creates a disequality expression.

See Also

LSOperator.Neq

Since version 5.5

LSExpression localsolver.LSModel.Neq	(	LSExpression	a,
		double	b
	)

Creates a disequality expression.

See Also

LSOperator.Neq

Since version 5.5

LSExpression localsolver.LSModel.Neq	(	double	a,
		LSExpression	b
	)

Creates a disequality expression.

See Also

LSOperator.Neq

Since version 5.5

LSExpression localsolver.LSModel.Geq	(	LSExpression	a,
		LSExpression	b
	)

Creates an inequality expression greater than or equal to.

See Also

LSOperator.Geq

Since version 5.5

LSExpression localsolver.LSModel.Geq	(	LSExpression	a,
		long	b
	)

Creates an inequality expression greater than or equal to.

See Also

LSOperator.Geq

Since version 5.5

LSExpression localsolver.LSModel.Geq	(	long	a,
		LSExpression	b
	)

Creates an inequality expression greater than or equal to.

See Also

LSOperator.Geq

Since version 5.5

LSExpression localsolver.LSModel.Geq	(	LSExpression	a,
		double	b
	)

Creates an inequality expression greater than or equal to.

See Also

LSOperator.Geq

Since version 5.5

LSExpression localsolver.LSModel.Geq	(	double	a,
		LSExpression	b
	)

Creates an inequality expression greater than or equal to.

See Also

LSOperator.Geq

Since version 5.5

LSExpression localsolver.LSModel.Leq	(	LSExpression	a,
		LSExpression	b
	)

Creates an inequality expression less than or equal to.

See Also

LSOperator.Leq

Since version 5.5

LSExpression localsolver.LSModel.Leq	(	LSExpression	a,
		long	b
	)

Creates an inequality expression less than or equal to.

See Also

LSOperator.Leq

Since version 5.5

LSExpression localsolver.LSModel.Leq	(	long	a,
		LSExpression	b
	)

Creates an inequality expression less than or equal to.

See Also

LSOperator.Leq

Since version 5.5

LSExpression localsolver.LSModel.Leq	(	LSExpression	a,
		double	b
	)

Creates an inequality expression less than or equal to.

See Also

LSOperator.Leq

Since version 5.5

LSExpression localsolver.LSModel.Leq	(	double	a,
		LSExpression	b
	)

Creates an inequality expression less than or equal to.

See Also

LSOperator.Leq

Since version 5.5

LSExpression localsolver.LSModel.Gt	(	LSExpression	a,
		LSExpression	b
	)

Creates an inequality expression greater than.

See Also

LSOperator.Gt

Since version 5.5

LSExpression localsolver.LSModel.Gt	(	LSExpression	a,
		long	b
	)

Creates an inequality expression greater than.

See Also

LSOperator.Gt

Since version 5.5

LSExpression localsolver.LSModel.Gt	(	long	a,
		LSExpression	b
	)

Creates an inequality expression greater than.

See Also

LSOperator.Gt

Since version 5.5

LSExpression localsolver.LSModel.Gt	(	LSExpression	a,
		double	b
	)

Creates an inequality expression greater than.

See Also

LSOperator.Gt

Since version 5.5

LSExpression localsolver.LSModel.Gt	(	double	a,
		LSExpression	b
	)

Creates an inequality expression greater than.

See Also

LSOperator.Gt

Since version 5.5

LSExpression localsolver.LSModel.Lt	(	LSExpression	a,
		LSExpression	b
	)

Creates an inequality expression less than.

See Also

LSOperator.Lt

Since version 5.5

LSExpression localsolver.LSModel.Lt	(	LSExpression	a,
		long	b
	)

Creates an inequality expression less than.

See Also

LSOperator.Lt

Since version 5.5

LSExpression localsolver.LSModel.Lt	(	long	a,
		LSExpression	b
	)

Creates an inequality expression less than.

See Also

LSOperator.Lt

Since version 5.5

LSExpression localsolver.LSModel.Lt	(	LSExpression	a,
		double	b
	)

Creates an inequality expression less than.

See Also

LSOperator.Lt

Since version 5.5

LSExpression localsolver.LSModel.Lt	(	double	a,
		LSExpression	b
	)

Creates an inequality expression less than.

See Also

LSOperator.Lt

Since version 5.5

LSExpression localsolver.LSModel.If	(	LSExpression	a,
		LSExpression	b,
		LSExpression	c
	)

Creates a ternary conditionnal expression.

See Also

LSOperator.If

Since version 5.5

LSExpression localsolver.LSModel.If	(	LSExpression	a,
		LSExpression	b,
		long	c
	)

Creates a ternary conditionnal expression.

See Also

LSOperator.If

Since version 5.5

LSExpression localsolver.LSModel.If	(	LSExpression	a,
		long	b,
		LSExpression	c
	)

Creates a ternary conditionnal expression.

See Also

LSOperator.If

Since version 5.5

LSExpression localsolver.LSModel.If	(	LSExpression	a,
		long	b,
		long	c
	)

Creates a ternary conditionnal expression.

See Also

LSOperator.If

Since version 5.5

LSExpression localsolver.LSModel.If	(	LSExpression	a,
		LSExpression	b,
		double	c
	)

Creates a ternary conditionnal expression.

See Also

LSOperator.If

Since version 5.5

LSExpression localsolver.LSModel.If	(	LSExpression	a,
		double	b,
		LSExpression	c
	)

Creates a ternary conditionnal expression.

See Also

LSOperator.If

Since version 5.5

LSExpression localsolver.LSModel.If	(	LSExpression	a,
		double	b,
		double	c
	)

Creates a ternary conditionnal expression.

See Also

LSOperator.If

Since version 5.5

LSExpression localsolver.LSModel.Not

(

LSExpression

a

)

Creates a NOT expression.

See Also

LSOperator.Not

Since version 5.5

LSExpression localsolver.LSModel.And

(

)

Creates an AND expression.

See Also

LSOperator.And

Since version 5.5

LSExpression localsolver.LSModel.And

(

IEnumerable< LSExpression >

operands

)

Creates an AND expression.

See Also

LSOperator.And

Since version 5.5

LSExpression localsolver.LSModel.And

(

params LSExpression[]

operands

)

Creates an AND expression.

See Also

LSOperator.And

Since version 5.5

LSExpression localsolver.LSModel.And	(	LSExpression	a,
		LSExpression	b
	)

Creates an AND expression.

See Also

LSOperator.And

Since version 5.5

LSExpression localsolver.LSModel.Or

(

)

Creates a OR expression.

See Also

LSOperator.Or

Since version 5.5

LSExpression localsolver.LSModel.Or

(

IEnumerable< LSExpression >

operands

)

Creates a OR expression.

See Also

LSOperator.Or

Since version 5.5

LSExpression localsolver.LSModel.Or

(

params LSExpression[]

operands

)

Creates a OR expression.

See Also

LSOperator.Or

Since version 5.5

LSExpression localsolver.LSModel.Or	(	LSExpression	a,
		LSExpression	b
	)

Creates a OR expression.

See Also

LSOperator.Or

Since version 5.5

LSExpression localsolver.LSModel.Xor

(

)

Creates a XOR expression.

See Also

LSOperator.Xor

Since version 5.5

LSExpression localsolver.LSModel.Xor

(

IEnumerable< LSExpression >

operands

)

Creates a XOR expression.

See Also

LSOperator.Xor

Since version 5.5

LSExpression localsolver.LSModel.Xor

(

params LSExpression[]

operands

)

Creates a XOR expression.

See Also

LSOperator.Xor

Since version 5.5

LSExpression localsolver.LSModel.Xor	(	LSExpression	a,
		LSExpression	b
	)

Creates a XOR expression.

See Also

LSOperator.Xor

Since version 5.5

LSExpression localsolver.LSModel.Abs

(

LSExpression

a

)

Creates an absolute value expression.

See Also

LSOperator.Abs

Since version 5.5

LSExpression localsolver.LSModel.Dist	(	LSExpression	a,
		LSExpression	b
	)

Creates a distance expression.

See Also

LSOperator.Dist

Since version 5.5

LSExpression localsolver.LSModel.Dist	(	LSExpression	a,
		long	b
	)

Creates a distance expression.

See Also

LSOperator.Dist

Since version 5.5

LSExpression localsolver.LSModel.Dist	(	long	a,
		LSExpression	b
	)

Creates a distance expression.

See Also

LSOperator.Dist

Since version 5.5

LSExpression localsolver.LSModel.Dist	(	LSExpression	a,
		double	b
	)

Creates a distance expression.

See Also

LSOperator.Dist

Since version 5.5

LSExpression localsolver.LSModel.Dist	(	double	a,
		LSExpression	b
	)

Creates a distance expression.

See Also

LSOperator.Dist

Since version 5.5

LSExpression localsolver.LSModel.Div	(	LSExpression	a,
		LSExpression	b
	)

Creates a division expression.

See Also

LSOperator.Div

Since version 5.5

LSExpression localsolver.LSModel.Div	(	LSExpression	a,
		long	b
	)

Creates a division expression.

See Also

LSOperator.Div

Since version 5.5

LSExpression localsolver.LSModel.Div	(	long	a,
		LSExpression	b
	)

Creates a division expression.

See Also

LSOperator.Div

Since version 5.5

LSExpression localsolver.LSModel.Div	(	LSExpression	a,
		double	b
	)

Creates a division expression.

See Also

LSOperator.Div

Since version 5.5

LSExpression localsolver.LSModel.Div	(	double	a,
		LSExpression	b
	)

Creates a division expression.

See Also

LSOperator.Div

Since version 5.5

LSExpression localsolver.LSModel.Mod	(	LSExpression	a,
		LSExpression	b
	)

Creates a modulo expression.

See Also

LSOperator.Mod

Since version 5.5

LSExpression localsolver.LSModel.Mod	(	LSExpression	a,
		long	b
	)

Creates a modulo expression.

See Also

LSOperator.Mod

Since version 5.5

LSExpression localsolver.LSModel.Mod	(	long	a,
		LSExpression	b
	)

Creates a modulo expression.

See Also

LSOperator.Mod

Since version 5.5

LSExpression localsolver.LSModel.Array

(

)

Creates an array expression.

See Also

LSOperator.Array

Since version 5.5

LSExpression localsolver.LSModel.Array

(

IEnumerable< LSExpression >

operands

)

Creates an array expression.

See Also

LSOperator.Array

Since version 5.5

LSExpression localsolver.LSModel.Array

(

IEnumerable< long >

operands

)

Creates an array expression.

See Also

LSOperator.Array

Since version 5.5

LSExpression localsolver.LSModel.Array

(

IEnumerable< double >

operands

)

Creates an array expression.

See Also

LSOperator.Array

Since version 5.5

LSExpression localsolver.LSModel.Array

(

params LSExpression[]

operands

)

Creates an array expression.

See Also

LSOperator.Array

Since version 5.5

LSExpression localsolver.LSModel.Array

(

params long[]

operands

)

Creates an array expression.

See Also

LSOperator.Array

Since version 5.5

LSExpression localsolver.LSModel.Array

(

params double[]

operands

)

Creates an array expression.

See Also

LSOperator.Array

Since version 5.5

LSExpression localsolver.LSModel.At	(	LSExpression	arrayExpr,
		params LSExpression[]	indicesExpr
	)

Creates a "at" expression.

See Also

LSOperator.At

Since version 5.5

LSExpression localsolver.LSModel.At	(	LSExpression	arrayExpr,
		long	index
	)

Creates a "at" expression.

See Also

LSOperator.At

Since version 5.5

LSExpression localsolver.LSModel.Scalar	(	LSExpression	a,
		LSExpression	b
	)

Creates a scalar product expression between 2 arrays.

See Also

LSOperator.Scalar

Since version 5.5

LSExpression localsolver.LSModel.Ceil

(

LSExpression

a

)

Creates a ceil expression.

See Also

LSOperator.Ceil

Since version 5.5

LSExpression localsolver.LSModel.Floor

(

LSExpression

a

)

Creates a floor expression.

See Also

LSOperator.Floor

Since version 5.5

LSExpression localsolver.LSModel.Round

(

LSExpression

a

)

Creates a round expression.

See Also

LSOperator.Round

Since version 5.5

LSExpression localsolver.LSModel.Sqrt

(

LSExpression

a

)

Creates a square root expression.

See Also

LSOperator.Sqrt

Since version 5.5

LSExpression localsolver.LSModel.Log

(

LSExpression

a

)

Creates a natural logarithm expression.

See Also

LSOperator.Log

Since version 5.5

LSExpression localsolver.LSModel.Exp

(

LSExpression

a

)

Creates an exponential expression.

See Also

LSOperator.Exp

Since version 5.5

LSExpression localsolver.LSModel.Pow	(	LSExpression	a,
		LSExpression	b
	)

Creates a power expression.

See Also

LSOperator.Pow

Since version 5.5

LSExpression localsolver.LSModel.Pow	(	LSExpression	a,
		long	b
	)

Creates a power expression.

See Also

LSOperator.Pow

Since version 5.5

LSExpression localsolver.LSModel.Pow	(	long	a,
		LSExpression	b
	)

Creates a power expression.

See Also

LSOperator.Pow

Since version 5.5

LSExpression localsolver.LSModel.Pow	(	LSExpression	a,
		double	b
	)

Creates a power expression.

See Also

LSOperator.Pow

Since version 5.5

LSExpression localsolver.LSModel.Pow	(	double	a,
		LSExpression	b
	)

Creates a power expression.

See Also

LSOperator.Pow

Since version 5.5

LSExpression localsolver.LSModel.Cos

(

LSExpression

a

)

Creates a cosine expression.

See Also

LSOperator.Cos

Since version 5.5

LSExpression localsolver.LSModel.Sin

(

LSExpression

a

)

Creates a sine expression.

See Also

LSOperator.Sin

Since version 5.5

LSExpression localsolver.LSModel.Tan

(

LSExpression

a

)

Creates a tangent expression.

See Also

LSOperator.Tan

Since version 5.5

LSExpression localsolver.LSModel.Piecewise	(	LSExpression	abscissae,
		LSExpression	ordinates,
		LSExpression	x
	)

Creates a piecewise linear expression.

See Also

LSOperator.Piecewise

Since version 5.5

LSExpression localsolver.LSModel.List

(

long

a

)

Creates a list variable.

See Also

LSOperator.List

Since version 5.5

LSExpression localsolver.LSModel.Count

(

LSExpression

a

)

Creates a count expression.

See Also

LSOperator.Count

Since version 5.5

LSExpression localsolver.LSModel.IndexOf	(	LSExpression	a,
		long	b
	)

Creates an indexOf expression.

See Also

LSOperator.IndexOf

Since version 5.5

LSExpression localsolver.LSModel.IndexOf	(	LSExpression	a,
		LSExpression	b
	)

Creates an indexOf expression.

See Also

LSOperator.IndexOf

Since version 5.5

LSExpression localsolver.LSModel.Partition

(

)

Creates a partition expression.

See Also

LSOperator.Partition

Since version 5.5

LSExpression localsolver.LSModel.Partition

(

params LSExpression[]

operands

)

Creates a partition expression.

See Also

LSOperator.Partition

Since version 5.5

LSExpression localsolver.LSModel.Disjoint

(

)

Creates a disjoint expression.

See Also

LSOperator.Disjoint

Since version 5.5

LSExpression localsolver.LSModel.Disjoint

(

params LSExpression[]

operands

)

Creates a disjoint expression.

See Also

LSOperator.Disjoint

Since version 5.5

LSExpression localsolver.LSModel.Function

(

LSNativeFunction

func

)

Creates a function expression.

This method is a shortcut for CreateNativeFunction.

See Also

LSOperator.NativeFunction

Since version 6.0

LSExpression localsolver.LSModel.Call

(

)

Creates a call expression.

See Also

LSOperator.Call

Since version 6.0

LSExpression localsolver.LSModel.Call

(

LSExpression

expr0

)

Creates a call expression.

See Also

LSOperator.Call

Since version 6.0

LSExpression localsolver.LSModel.Call	(	LSExpression	expr0,
		LSExpression	expr1
	)

Creates a call expression.

See Also

LSOperator.Call

Since version 6.0

LSExpression localsolver.LSModel.Call	(	LSExpression	expr0,
		LSExpression	expr1,
		LSExpression	expr2
	)

Creates a call expression.

See Also

LSOperator.Call

Since version 6.0

LSExpression localsolver.LSModel.Call

(

params LSExpression[]

operands

)

Creates a call expression.

See Also

LSOperator.Call

Since version 6.0

LSExpression localsolver.LSModel.Call

(

IEnumerable< LSExpression >

operands

)

Creates a call expression.

See Also

LSOperator.Call

Since version 6.0

int localsolver.LSModel.GetNbExpressions

(

)

Gets the number of expressions added to this model.

Returns

Number of expressions.

LSExpression localsolver.LSModel.GetExpression

(

int

exprIndex

)

Gets the expression with the given index in this model.

Parameters

exprIndex

Index of the expression.

Returns

Expression with the given index.

LSExpression localsolver.LSModel.GetExpression

(

string

name

)

Gets the expression with the given name.

Throws an exception if no expression with the given name exists.

Parameters

name

Name.

Returns

Expression with the given name.

int localsolver.LSModel.GetNbDecisions

(

)

Gets the number of decisions in the model.

This corresponds to the number of decision variables declared in the model.

Returns

Number of decisions.

LSExpression localsolver.LSModel.GetDecision

(

int

decisionIndex

)

Gets the decision with the given index.

Parameters

decisionIndex

Index of the decision.

Returns

Decision with the given index.

void localsolver.LSModel.AddConstraint

(

LSExpression

expr

)

Adds the given expression to the list of constraints.

It means that the value of this expression must be constrained to be equal to 1 in any solution found by the solver. Hence, only boolean expressions (that is, expressions whose value is boolean) can be constrained. Only allowed in state LSState::Modeling. If the expression is already a constraint, this method does nothing and returns immediately. Try to avoid hard constraints as much as possible, because LocalSolver (and more generally local search) is not suited for solving hardly constrained problems. In particular, banish constraints that are not surely satisfied in practice. Ideally, only combinatorial constraints (which induce the combinatorial structure of your problem) have to be set. All the other constraints can be relaxed as primary objectives in order to be "softly" satisfied (goal programming). For instance, constraint a <= b can be transformed into minimize max(b-a, 0).

Parameters

expr	Expression.

void localsolver.LSModel.Constraint

(

LSExpression

expr

)

Shortcut for addConstraint(expr).

Parameters

expr	Expression.

See Also

LSModel.AddConstraint

Since version 5.5

void localsolver.LSModel.RemoveConstraint

(

LSExpression

expr

)

Removes the given expression from the list of constraints.

If the expression was not constrained, this method does nothing and returns immediately. Only allowed in state LSState::Modeling.

Parameters

expr	Expression.

Since version 5.0

void localsolver.LSModel.RemoveConstraint

(

int

constraintIndex

)

Removes the constraint at the given position in the list of constraints.

Only allowed in state LSState::Modeling.

Parameters

constraintIndex

position of the constraint to remove.

Since version 5.0

int localsolver.LSModel.GetNbConstraints

(

)

Gets the number of constraints added to this model.

Returns

Number of constraints.

LSExpression localsolver.LSModel.GetConstraint

(

int

constraintIndex

)

Gets the constraint with the given index.

Parameters

constraintIndex

Index of the constraint.

Returns

Constraint with the given index.

void localsolver.LSModel.AddObjective	(	LSExpression	expr,
		LSObjectiveDirection	direction
	)

Adds the given expression to the list of objectives to optimize.

A same expression can be added more than once. Only allowed in state LSState::Modeling. Note that the objectives will be optimized in the order in which they have been added to the model. It is useful for lexicographic multiobjective optimization, and more particularly for goal programming.

Parameters

expr	Expression.
direction	Optimization direction of this objective.

void localsolver.LSModel.Minimize

(

LSExpression

expr

)

Shortcut for addObjective(expr, OD_Minimize).

Parameters

expr	Expression.

See Also

LSModel.AddObjective

Since version 5.5

void localsolver.LSModel.Maximize

(

LSExpression

expr

)

Shortcut for addObjective(expr, OD_Maximize).

Parameters

expr	Expression.

See Also

LSModel.AddObjective

Since version 5.5

void localsolver.LSModel.RemoveObjective

(

int

objectiveIndex

)

Removes the objective at the given position in the list of objectives.

Note that the objectives created after the removed one have their index decreased by 1. Phases are not modified when an objective is removed. It is the user's responsibility to change the objective index of each phase to keep it coherent (with LSPhase::SetOptimizedObjective), or to disable it (with LSPhase::SetEnabled). Only allowed in state LSState::Modeling.

Parameters

objectiveIndex

position of the objective to remove.

Since version 5.0

int localsolver.LSModel.GetNbObjectives

(

)

Gets the number of objectives added to this model.

Returns

Number of objectives.

LSExpression localsolver.LSModel.GetObjective

(

int

objectiveIndex

)

Gets the objective with the given index.

Parameters

objectiveIndex

Index of the objective.

Returns

Objective with the given index.

LSObjectiveDirection localsolver.LSModel.GetObjectiveDirection

(

int

objectiveIndex

)

Gets the direction of the objective with the given index.

Parameters

objectiveIndex

Index of the objective.

Returns

Objective direction.

int localsolver.LSModel.GetNbOperands

(

)

Gets the number of operands in the model.

This corresponds to the number of operands for all expressions declared in the model. It is an analog of the number of non zeros in matrix model encountered in mathematical programming: it gives an hint about the size and the density of your model.

Returns

Number of operands.

void localsolver.LSModel.Close

(

)

Closes the model.

Only allowed in state LSState::Modeling. Once the model is closed, no expression, constraints or objectives can be added. The model must be closed before starting its resolution.

void localsolver.LSModel.Open

(

)

Opens or reopens the model.

When this method is called, the solver is placed in state LSState::Modeling. Only allowed in state LSState::Stopped.

bool localsolver.LSModel.IsClosed

(

)

Returns true if the model is closed, false otherwise.

Returns

True if the model is closed.

override string localsolver.LSModel.ToString

(

)

Returns a string representation of this model.

This representation provides:

• The number of expressions, decisions, constraints, and objectives.
• The density of the model.

Useful for debugging or logging purposes.

Returns

String representation.