Initializing help system before first use

ConstantExpression

  • public final class ConstantExpression
extends AbstractExpression
    A constant value.
    Since:
    43.00

    • Constructor Detail

      • ConstantExpression

        public ConstantExpression​(double value)
        Create a new constant expression.
        Parameters:
        value - Constant value for new expression.
        Since:
        43.00

    • Method Detail

      • getValue

        public double getValue()

      • constant

        public static ConstantExpression constant​(double cnst)
        Utility function to create a constant expression.
        Parameters:
        cnst - Constant value for new expression.
        Returns:
        The new expression.
        Since:
        43.00

      • extract

        public boolean extract​(double factor,
                       XPRSprob.RowCreator creator)
        Extract this expression into a row. This is for internal use only, you should never have to call this function explicitly.
        Specified by:
        extract in class  Expression
        Parameters:
        factor - Factor by which to multiply the expression during extraction.
        creator - The creator to which this expression should be extracted.
        Returns:
        true if the low-level representation does requires normalization (sorting, removal of dups, ...). In some special cases we know that this is not required and can return false to save the overhead.
        Since:
        43.00

      • evaluate

        public double evaluate​(double[] solution)
        Compute the value of this expression with respect to the given solution vector (which is not required to be feasible).
        Specified by:
        evaluate in class  Expression
        Parameters:
        solution - Solution values for which the expression is evaluated.
        Since:
        43.00

      • extract

        public void extract​(double factor,
                    PostfixExtractor extractor)
        Extract this expression into postfix notation.
        Specified by:
        extract in class  Expression
        Parameters:
        factor - Factor by which to multiply the expression during extraction.
        extractor - The extractor to which the expression is extract.
        Since:
        43.00

      • toString

        public java.lang.String toString()

        Used in these examples:

        • GlobalRHSParametrics
        • IISExample
        • Knapsack
        • Trimloss
        Overrides:
        toString in class  java.lang.Object
        Since:
        43.00

      • uminus

        public ConstantExpression uminus()
        Create a new expression that represents the unary minus of this one.
        Overrides:
        uminus in class  Expression
        Returns:
        Expression representing -this.
        Since:
        43.00

      • plus

        public Expression plus​(Expression arg)
        Create a new expression that represents the sum of this and arg.
        Overrides:
        plus in class  Expression
        Parameters:
        arg - Addend.
        Returns:
        Sum of this and arg.
        Since:
        43.00

      • plus

        public ConstantExpression plus​(double arg)
        Create a new expression that represents the sum of this and arg.
        Overrides:
        plus in class  Expression
        Parameters:
        arg - Addend.
        Returns:
        Sum of this and arg.
        Since:
        43.00

      • minus

        public Expression minus​(Expression arg)
        Create a new expression that represents the difference of this and arg.
        Overrides:
        minus in class  Expression
        Parameters:
        arg - Minuend.
        Returns:
        Difference of this and arg.
        Since:
        43.00

      • minus

        public ConstantExpression minus​(double arg)
        Create a new expression that represents the difference of this and arg.
        Overrides:
        minus in class  Expression
        Parameters:
        arg - Minuend.
        Returns:
        Difference of this and arg.
        Since:
        43.00

      • mul

        public Expression mul​(Expression arg)
        Create a new expression that represents the product of this and arg.
        Overrides:
        mul in class  Expression
        Parameters:
        arg - Factor.
        Returns:
        Product of this and arg.
        Since:
        43.00

      • mul

        public ConstantExpression mul​(double arg)
        Create a new expression that represents the product of this and arg.
        Overrides:
        mul in class  Expression
        Parameters:
        arg - Factor.
        Returns:
        Product of this and arg.
        Since:
        43.00

      • div

        public Expression div​(Expression arg)
        Create a new expression that represents the quotient of this and arg.
        Overrides:
        div in class  Expression
        Parameters:
        arg - Divisor.
        Returns:
        Quotient of this and arg.
        Since:
        43.00

      • div

        public ConstantExpression div​(double arg)
        Create a new expression that represents the quotient of this and arg.
        Overrides:
        div in class  Expression
        Parameters:
        arg - Divisor.
        Returns:
        Quotient of this and arg.
        Since:
        43.00
Parent Topic Class Summary

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