org.apache.poi.ss.formula.functions
Class Delta

java.lang.Object
  extended by org.apache.poi.ss.formula.functions.Fixed2ArgFunction
      extended by org.apache.poi.ss.formula.functions.Delta
All Implemented Interfaces:
Function, Function2Arg

public final class Delta
extends Fixed2ArgFunction

Implementation for Excel DELTA() function.

Syntax:
DELTA (number1,number2 )

Tests whether two values are equal. Returns 1 if number1 = number2; returns 0 otherwise. Use this function to filter a set of values. For example, by summing several DELTA functions you calculate the count of equal pairs. This function is also known as the Kronecker Delta function.

Author:
cedric dot walter @ gmail dot com

Constructor Summary
Delta()
           
 
Method Summary
 ValueEval evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg1, ValueEval arg2)
          see Function.evaluate(ValueEval[], int, int)
 
Methods inherited from class org.apache.poi.ss.formula.functions.Fixed2ArgFunction
evaluate
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Delta

public Delta()
Method Detail

evaluate

public ValueEval evaluate(int srcRowIndex,
                          int srcColumnIndex,
                          ValueEval arg1,
                          ValueEval arg2)
Description copied from interface: Function2Arg
see Function.evaluate(ValueEval[], int, int)



Copyright 2013 The Apache Software Foundation or its licensors, as applicable.