> For the complete documentation index, see [llms.txt](https://docs.cascade.io/cascade/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cascade.io/cascade/functions-and-expressions/functions/aggregate/runningtotalby/sign.md).

# SIGN

SIGN( `number`)

Returns the sign of a `number`

### Arguments

| Argument | Description               |
| -------- | ------------------------- |
| `number` | Number(s) to find sign of |

### Output

Returns -1 for a negative number, 0 for 0, and 1 for a postive number

### Example

```
SIGN(-2.5) = -1
SIGN(2.5) = 1
```