Function isNotPositive

isNotPositive(value?: number): boolean
Returns whether the given value is not positive
Parameters
- Optionalvalue: number
  the number value to check
Returns boolean
whether the given value is not positive
Author
David Hsing
Example
```
isNotPositive(1);    // false
isNotPositive(0);    // true
isNotPositive(-1);    // true
```