com.google.ortools.sat

Class DoubleLinearExpr

java.lang.Object

com.google.ortools.sat.DoubleLinearExpr

public class DoubleLinearExpr
extends java.lang.Object

A linear expression interface that can be parsed.

Constructor Summary

Constructors

Constructor and Description
DoubleLinearExpr(IntVar[] vars, double offset)
DoubleLinearExpr(IntVar[] variables, double[] coefficients, double offset)
DoubleLinearExpr(IntVar var, double coefficient, double offset)
DoubleLinearExpr(Literal[] literals, double offset)
DoubleLinearExpr(Literal[] literals, double[] coefficients, double offset)
DoubleLinearExpr(Literal lit, double coefficient, double offset)

Method Summary

Modifier and Type	Method and Description
static DoubleLinearExpr	affine(IntVar variable, double coefficient, double offset) Creates an affine expression (var * coefficient + offset).
static DoubleLinearExpr	affine(Literal lit, double coefficient, double offset) Creates an affine expression (lit * coefficient + offset).
static DoubleLinearExpr	constant(double value) Creates a constant expression.
double	getCoefficient(int index) Returns the ith coefficient.
double	getOffset() Returns the constant part of the expression.
int	getVariableIndex(int index) Returns the ith variable.
int	numElements() Returns the number of elements in the interface.
static DoubleLinearExpr	sum(IntVar[] variables) Creates a sum expression.
static DoubleLinearExpr	sum(Literal[] literals) Creates a sum expression.
static DoubleLinearExpr	sumWithOffset(IntVar[] variables, double offset) Creates a sum expression with a double offset.
static DoubleLinearExpr	sumWithOffset(Literal[] literals, double offset) Creates a sum expression with a double offset.
static DoubleLinearExpr	term(IntVar variable, double coefficient) Creates a linear term (var * coefficient).
static DoubleLinearExpr	term(Literal lit, double coefficient) Creates a linear term (lit * coefficient).
static DoubleLinearExpr	weightedSum(IntVar[] variables, double[] coefficients) Creates a scalar product.
static DoubleLinearExpr	weightedSum(Literal[] literals, double[] coefficients) Creates a scalar product.
static DoubleLinearExpr	weightedSumWithOffset(IntVar[] variables, double[] coefficients, double offset) Creates a scalar product.
static DoubleLinearExpr	weightedSumWithOffset(Literal[] literals, double[] coefficients, double offset) Creates a scalar product with a double offset.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DoubleLinearExpr

public DoubleLinearExpr(IntVar[] variables,
                        double[] coefficients,
                        double offset)

DoubleLinearExpr

public DoubleLinearExpr(Literal[] literals,
                        double[] coefficients,
                        double offset)

DoubleLinearExpr

public DoubleLinearExpr(IntVar var,
                        double coefficient,
                        double offset)

DoubleLinearExpr

public DoubleLinearExpr(Literal lit,
                        double coefficient,
                        double offset)

DoubleLinearExpr

public DoubleLinearExpr(IntVar[] vars,
                        double offset)

DoubleLinearExpr

public DoubleLinearExpr(Literal[] literals,
                        double offset)

Method Detail

sum

public static DoubleLinearExpr sum(IntVar[] variables)

Creates a sum expression.

sum

public static DoubleLinearExpr sum(Literal[] literals)

Creates a sum expression.

sumWithOffset

public static DoubleLinearExpr sumWithOffset(IntVar[] variables,
                                             double offset)

Creates a sum expression with a double offset.

sumWithOffset

public static DoubleLinearExpr sumWithOffset(Literal[] literals,
                                             double offset)

Creates a sum expression with a double offset.

weightedSum

public static DoubleLinearExpr weightedSum(IntVar[] variables,
                                           double[] coefficients)

Creates a scalar product.

weightedSum

public static DoubleLinearExpr weightedSum(Literal[] literals,
                                           double[] coefficients)

Creates a scalar product.

weightedSumWithOffset

public static DoubleLinearExpr weightedSumWithOffset(IntVar[] variables,
                                                     double[] coefficients,
                                                     double offset)

Creates a scalar product.

weightedSumWithOffset

public static DoubleLinearExpr weightedSumWithOffset(Literal[] literals,
                                                     double[] coefficients,
                                                     double offset)

Creates a scalar product with a double offset.

term

public static DoubleLinearExpr term(IntVar variable,
                                    double coefficient)

Creates a linear term (var * coefficient).

term

public static DoubleLinearExpr term(Literal lit,
                                    double coefficient)

Creates a linear term (lit * coefficient).

affine

public static DoubleLinearExpr affine(IntVar variable,
                                      double coefficient,
                                      double offset)

Creates an affine expression (var * coefficient + offset).

affine

public static DoubleLinearExpr affine(Literal lit,
                                      double coefficient,
                                      double offset)

Creates an affine expression (lit * coefficient + offset).

constant

public static DoubleLinearExpr constant(double value)

Creates a constant expression.

numElements

public int numElements()

Returns the number of elements in the interface.

getVariableIndex

public int getVariableIndex(int index)

Returns the ith variable.

getCoefficient

public double getCoefficient(int index)

Returns the ith coefficient.

getOffset

public double getOffset()

Returns the constant part of the expression.