Abs Returns the absolute value of a numeric value or expression, or returns null if the value or expression is null. Syntax Abs(n1) Parameters Parameter Description n1 A numeric value or expression to evaluate. Note: FormCalc follows the IEEE-754 international standard when handling floating point numeric values. For more information, see “Number literals”. Examples The following expressions are examples of using the Abs function: Expression Returns Abs(1.03) 1.03 Abs(-1.03) 1.03 Abs(0) 0