Символы в переменной типа bool и в условии - C#

for (i = 0; i < array.Length; ++i)
                {
                    bool move = (array[i] << shift) >= 0;
                    if (shift == 0 ? !move : move)  
                        array[i - j] = array[i];
                    else                            // move the 1's to tmp
                        tmp[j++] = array[i];
                }

static void RadixSort(int[] array)
        {
            int i, j;
            int[] tmp = new int[array.Length];
            for (int shift = 31; shift > -1; --shift)
            {
                j = 0;
                for (i = 0; i < array.Length; ++i)
                {
                    bool move = (array[i] << shift) >= 0;
                    if (shift == 0 ? !move : move)  // shift the 0's to old's head
                        array[i - j] = array[i];
                    else                            // move the 1's to tmp
                        tmp[j++] = array[i];
                }
                Array.Copy(tmp, 0, array, array.Length - j, j);
            }
        }