# Math.sign

## Function

Symbol judgment. Negative numbers return -1, zero returns 0, and positive numbers return 1.

## Syntax

```bt
Math.sign(value)
```

## Parameters

| Parameters | Type | Required | Default value | Description |
| ------ | ------ | ------ | ------ | ------ |
| value | Number | Yes | None | The number involved in the judgment. |

## Return value

| Type | Description |
| ------ | ------ |
| Int/Float | Returns -1 for negative numbers, 0 for zero, and 1 for positive numbers. An Int is returned for integer results, and a Float for non-integer or non-finite results. |

## Example

```bt
result = Math.sign(-8)

// Output: -1
print result
```

## Notes

- The return value uses Int to represent -1, 0, or 1.