rp.expn
Class SumExpn

java.lang.Object
  |
  +--java.util.Observable
        |
        +--rp.expn.Expn
              |
              +--rp.expn.OperatorExpn
                    |
                    +--rp.expn.NaryOperatorExpn
                          |
                          +--rp.expn.SumExpn

All Implemented Interfaces:

java.util.Observer

public class SumExpn

extends NaryOperatorExpn

An N'ary operation node in an expression tree.

Version:

$Revision: 1.2 $, $Date: 2001/05/23 19:48:00 $

Field Summary

Fields inherited from class rp.expn.OperatorExpn

operands

Constructor Summary

SumExpn(Expn[] operands)
Construct a new sum operator with the given operands.

Method Summary

double

getScalarMean() Return a (possibly computed) scalar mean for this node in the expression tree.

Methods inherited from class rp.expn.NaryOperatorExpn

setOperand, setOperand

Methods inherited from class rp.expn.OperatorExpn

getNumOperands, getOperand, getOperand, setNumOperands, update

Methods inherited from class java.util.Observable

addObserver, clearChanged, countObservers, deleteObserver, deleteObservers, hasChanged, notifyObservers, notifyObservers, setChanged

Methods inherited from class java.lang.Object

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

Constructor Detail

SumExpn

public SumExpn(Expn[] operands)

Construct a new sum operator with the given operands.

Parameters:

operands - an array of operands

Method Detail

getScalarMean

public double getScalarMean()

Description copied from class: Expn

Return a (possibly computed) scalar mean for this node in the expression tree. Returns the most straight-forward, easily-computed mean value.

Specified by:

getScalarMean in class Expn