Function clamp

clamp(n: number, min: number, max: number): number
Clamp a number within a range.
Parameters
- n: number
  The number to clamp
- min: number
  The minimum value of the range
- max: number
  The maximum value of the range
Returns number
A clamped number
Example
```
const n1 = SMath.clamp(5, 0, 10),  // 5
      n2 = SMath.clamp(-2, 0, 10); // 0
```