Checking if the generated full k-point grid is symmetric

     2 k-points generated from parameters :
 ---------------------------------------------------
    n =    2    2    2

    s1  =  0.50  0.50  0.50

    s2  =  0.50  0.00  0.00

    s3  =  0.00  0.50  0.00

    s4  =  0.00  0.00  0.50

   index |      weight  |             coordinates              |
       1 |     0.250000 |    0.250000    0.000000    0.000000  |
       2 |     0.750000 |   -0.250000    0.250000    0.250000  |

