### You need to determine whether a number is positive or negative, or you need to find the absolute value of a number.

The sgn() function takes a number as its single parameter. The sgn() function will return 1 if the number is positive, 0 if the number equals 0, and -1 if the number in negative:

```
<cfset testVar = sgn(-127)>
<cfoutput>#testVar#</cfoutput>
-1
```

The abs() function also takes a number as its single parameter. The abs() function will return the absolute value (the value of the number without its sign) of the number:

```
<cfset testVar = abs(-127)>
<cfoutput>#testVar#</cfoutput>
127
```

This question was written by Jeremy Petersen

It was last updated on January 9, 2006.