SpreadSheet can work with the Excel functions. Below you'll find the full list of functions with detailed descriptions.

**ABS**- returns the absolute value of a number. The absolute value of a number is the number without its sign.**AVERAGE**- returns the average (arithmetic mean) of the arguments;- if a range or a cell reference argument contains text, logical values, or empty cells, those values are ignored; however, cells with the value zero are included.

**CONCATENATE**- joins values from a range of cells into a string.**COUNT**- counts the number of cells that contain numbers, and counts numbers within the list of arguments;- empty cells, logical values, text, or error values in the array or reference are not counted.

**COUNTA**- counts the number of cells that are not empty in a range, zero is excluded.**COUNTBLANK**- counts empty cells in a specified range of cells;- cells with zero values are not counted.

**EVEN**- returns number rounded up to the nearest even integer.**INT**- rounds a number down to the nearest integer.**MAX**- returns the largest value in a set of values;- empty cells, logical values, or text in the array or reference are ignored. If the arguments contain no numbers, MAX returns 0 (zero).

**MIN**- returns the smallest number in a set of values.- empty cells, logical values, or text in the array or reference are ignored. If the arguments contain no numbers, MIN returns 0 (zero).

**ODD**- returns number rounded up to the nearest odd integer.**PI**- returns the number 3.14159265358979, the mathematical constant pi, accurate to 15 digits.**POWER**- returns the result of a number raised to a power;- works with real numbers.

**PRODUCT**- multiplies all the numbers given as arguments and returns the product;- only numbers in the array or reference are multiplied. Empty cells, logical values, and text in the array or reference are ignored.

**QUOTIENT**-returns the integer portion of a division. Use this function when you want to discard the remainder of a division;- works with real numbers.

**RAND**- returns an evenly distributed random real number greater than or equal to 0 and less than 1. A new random real number is returned every time the worksheet is calculated.**ROUND**- rounds a number to a specified number of digits.**ROUNDDOWN**- rounds a number down to a specified number of digits.**ROUNDUP**- rounds a number up to a specified number of digits.**SQRT**- returns a positive square root.**STDEVP**- calculates standard deviation based on the entire population given as arguments. The standard deviation is a measure of how widely values are dispersed from the average value (the mean).- empty cells, logical values, text, or error values in the array or reference are ignored.

**SUM**- adds values;- empty cells, logical values like TRUE, or text are ignored.

**SUMPRODUCT**- multiplies corresponding components in the given arrays, and returns the sum of those products.- for valid products only numbers are multiplied. Empty cells, logical values, and text are ignored. Treats array entries that are not numeric as if they were zeros.

**SUMSQ**- returns the sum of the squares of the arguments;- empty cells, logical values, text, or error values in the array or reference are ignored.

**TRUNC**- truncates a number to an integer by removing the fractional part of the number.**VARP**- calculates variance based on the entire population;- empty cells, logical values, text, or error values in the array or reference are ignored.

**CONCATENATE**(A1,B2, C2:D4) - joins several text items into one text item.**LEFT**(text, count) - returns the first character or characters (leftmost) in a text string, based on the number of characters you specify.**LEN**(text) - returns the number of characters in a text string.**LOWER**(text) - converts all uppercase letters in a text string to lowercase.**MID**(text, start, count) - returns a specific number of characters from a text string starting at the position you specify.**PROPER**(text) - capitalizes the first letter in each word of a text value.**RIGHT**(text, count) - returns the last character or characters (rightmost) in a text string, based on the number of characters you specify.**TRIM**(text) - removes spaces from text.**UPPER**(text) - converts text to uppercase.

**DATE**(year, month, day) - creates a valid date from individual year, month, and day components.**TIME**(hour, minute, second) - allows to create a time with individual hour, minute, and second components.**DAY**(date) - returns the day of the month as a number between 1 to 31 from a given date.**MONTH**(date) - extracts the month from a given date as number between 1 to 12.**YEAR**(date) - returns the year component of a date as a 4-digit number.**NOW**() - returns the current date and time, updated continuously when a worksheet is changed or opened**DATEDIF**(start, end, unit) - returns the difference between two date values in years, months, or days.

**IMAGE**(url) - displays an image the URL of which is set as a parameter of the function**SPARKLINE**(range, type, color1, color2) - draws a sparkline according to the specified parameters**HYPERLINK**(url, text) - creates a shortcut or jump that opens a document stored on a network server, an intranet, or the Internet- link URL can be a text string or a reference to a cell that contains the link

**IF**(smth is true, then do smth, otherwise do smth else) - specifies a logical test to perform

(e.g. IF(A1 < 10, "Yes" , "No"))- the function supports the following operators <, >, <=, >=, <>, =

If you need a function that isn't listed above, you can create your own function and use it in the spreadsheet.

To add a new function, use the registerMathMethod method. You should pass two parameters to it:

- the name of the function. It should be defined in uppercase
- the function handler. It takes all the necessary parameters and contains the function's logic.
The handler receives either of the following notions as a parameter:
- a single value (a reference to a cell)
- an array of values (a reference to a range of cells)

For example, let's create a function "FIRST" that will return the value of the first cell in a range. So, we should add our function to the list as follows:

$$("ss").registerMathMethod("FIRST", function(range){
return range[0];
});

And we can use the new method as:

=FIRST(H3:H5);

In the above example we have passed one parameter to the handler, the cell range. The "FIRST" function returns the value of the first cell.

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