# sign(n)

Returns 1 if the numeric value, *n* is positive. It returns -1 if the *n* is negative, and 0 if *n* is 0. *n* can be any real numeric value in the range of -1e308 <= *n* <= 1e308. If `null` is passed as an argument, `sign()` returns `null`. This function can only be used in a `foreach` statement.

## Example

```nolang
q = foreach q generate sign(value) as value;
```