DELTA

DELTA function : 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.


Syntax
DELTA(number1,number2)

Number1   is the first number.
Number2   is the second number. If omitted, number2 is assumed to be zero.
Remarks

• If number1 is nonnumeric, DELTA returns the #VALUE! error value.
• If number2 is nonnumeric, DELTA returns the #VALUE! error value.

Example
The example may be easier to understand if you copy it to a blank worksheet.

How to copy an example

1. Create a blank workbook or worksheet.
2. Select the example in the Help topic.  Note    Do not select the row or column headers.
   
   
   Selecting an example from Help
3. Press CTRL+C.
4. In the worksheet, select cell A1, and press CTRL+V.
5. To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Formulas tab, in the Formula Auditing group, click the Show Formulas button.

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A B Formula Description (Result) =DELTA(5, 4) Checks whether 5 equals 4 (0) =DELTA(5, 5) Checks whether 5 equals 5 (1) =DELTA(0.5, 0) Checks whether 0.5 equals 0 (0)