ABS( )
Returns the absolute value of a number without regard to its sign. For example, 6 is the absolute value of 6 and ‑6.
Syntax
ABS(num)
Argument
num
The number, or numeric expression specifying the number, for which you need to find the absolute value.
Returns
A number representing the absolute value of num.
Example
The following example returns the absolute value for each number in the TemperatureCelsius data field:
ABS([TemperatureCelsius])