Initializing help system before first use

SumExpression

  • public final class SumExpression
extends AbstractExpression
    Temporary class that is used to efficiently represent sums of expressions. You should never have to instantiate this class explicitly. Note that the array passed to the constructor is only copied by reference! So make sure this is not something that will change afterwards. This is also one of the reasons this class has "package" protection and is not visible to the user.
    Since:
    43.00

    • Method Summary

      Modifier and Type Method Description
      double evaluate​(double[] solution)
      Compute the value of this expression with respect to the given solution vector (which is not required to be feasible).
      void extract​(double factor, PostfixExtractor extractor)
      Extract this expression into postfix notation.
      boolean extract​(double factor, XPRSprob.RowCreator creator)
      Extract this expression into a row.
      java.lang.String toString()

      • Methods inherited from class java.lang.Object

        equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

    • Constructor Detail

      • SumExpression

        public SumExpression​(Expression[] terms)
        Since:
        43.00

    • Method Detail

      • 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

      • 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

      • 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

      • toString

        public java.lang.String toString()

        Used in these examples:

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

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