A very simple method that i find quite useful to have: Returns min if value is over the max returns max if value is bellow min.

public static int ClampCircle(int p_value, int p_min, int p_max)
    {
        if (p_value > p_max)
        {
            return p_min;
        }
        else if (p_value < p_min)
        {
            return p_max;
        }
        else
        {
            return p_value;
        }
    }