Math Functions

SSI Web includes a number of math functions that can be used to display information to the screen, within skip logic, within constructed list logic, for use with Hidden Variables, and in other fields within the SSI Web menu system.

The "SSI Script" column below gives the syntax for Math Functions.

SSI Script:	Description:
Abs (*NUMBER)	Returns the absolute value.
Ceiling (NUMBER)	Rounds the NUMBER up to the closest integer.
Exp (NUMBER)	Returns e (2.71828183) raised to the power of NUMBER
Floor (NUMBER)	Rounds the NUMBER down to the closest integer.
Log10 (NUMBER)	Returns the log (base 10) of NUMBER.
Ln (NUMBER)	Returns the natural log of NUMBER.
POWER (NUMBER1, NUMBER2)	Returns NUMBER1 raised to the NUMBER2 power.
ROUND (NUMBER) ROUND (NUMBER, #DECIMALS)	Rounds NUMBER to the #DECIMALS places. If no decimal places are specified, rounds to nearest integer.
Sqrt (NUMBER)	Returns the square root of NUMBER.
*For all math functions, NUMBER can be any QuestionName that contains a numeric value or any numeric expression (including functions and mathematical operators) that returns a numeric value.

For additional flexibility in SSI Scripting, see the Unverified Perl documentation.