How do i use IJobParallelForFilter?

I want to sort a large array using this compare function with the job system

Code (CSharp):

1.  
2. public static int IsClockwise(Vector2 first, Vector2 second, Vector2 origin) {
3.             if (first == second)
4.                 return 0;
5.  
6.             Vector2 firstOffset = first - origin;
7.             Vector2 secondOffset = second - origin;
8.  
9.             float angle1 = Mathf.Atan2(firstOffset.x, firstOffset.y);
10.             float angle2 = Mathf.Atan2(secondOffset.x, secondOffset.y);
11.  
12.             if (angle1 < angle2)
13.                 return -1;
14.  
15.             if (angle1 > angle2)
16.                 return 1;
17.  
18.             // Check to see which point is closest
19.             return (firstOffset.sqrMagnitude < secondOffset.sqrMagnitude) ? -1 : 1;
20.         }

I think the way to do that using an IJobParallelForFilter but i'm not totally sure.