n is the number of rows.
 m is the number of columns.
 bit_in is the maximum number of bits in entry of input.
 t_im is the time taken by image to compute the kernel.
 t_HNF is the time taken by HNF_image to compute the kernel.
 t_HNF/im is their ratio.
 bit_im is the maximum number of bits in kernel from image.
 bit_HNF is the maximum number of bits in kernel from HNF_image.
 bit_HNF/im  is their ratio.
 
m = 20, n = 40, bit_in = 10, t_im = 0.18, t_HNF = 0.29
     t_HNF/im = 1.61111  bit_im = 653  bit_HNF = 220  bit_HNF/im = 0.336907
m = 20, n = 40, bit_in = 24, t_im = 0.41, t_HNF = 0.4
     t_HNF/im = 0.97561  bit_im = 653  bit_HNF = 220  bit_HNF/im = 0.336907
m = 40, n = 80, bit_in = 10, t_im = 3.78, t_HNF = 4.54
     t_HNF/im = 1.20106  bit_im = 1374  bit_HNF = 459  bit_HNF/im = 0.334061
m = 40, n = 80, bit_in = 24, t_im = 10.07, t_HNF = 6.93
     t_HNF/im = 0.688183  bit_im = 1374  bit_HNF = 459  bit_HNF/im = 0.334061
m = 80, n = 160, bit_in = 10, t_im = 95.51, t_HNF = 79.72
     t_HNF/im = 0.834677  bit_im = 2887  bit_HNF = 963  bit_HNF/im = 0.333564
m = 80, n = 160, bit_in = 25, t_im = 269.18, t_HNF = 137.52
     t_HNF/im = 0.510885  bit_im = 2886  bit_HNF = 963  bit_HNF/im = 0.33368
m = 20, n = 40, bit_in = 20, t_im = 0.42, t_HNF = 0.41
     t_HNF/im = 0.97619  bit_im = 837  bit_HNF = 421  bit_HNF/im = 0.502987
m = 20, n = 40, bit_in = 44, t_im = 1.13, t_HNF = 0.7
     t_HNF/im = 0.619469  bit_im = 837  bit_HNF = 421  bit_HNF/im = 0.502987
m = 40, n = 80, bit_in = 20, t_im = 9.77, t_HNF = 6.93
     t_HNF/im = 0.709314  bit_im = 2584  bit_HNF = 863  bit_HNF/im = 0.333978
m = 40, n = 80, bit_in = 44, t_im = 28.04, t_HNF = 13.25
     t_HNF/im = 0.472539  bit_im = 2584  bit_HNF = 863  bit_HNF/im = 0.333978
m = 80, n = 160, bit_in = 20, t_im = 244.96, t_HNF = 131.67
     t_HNF/im = 0.537516  bit_im = 3530  bit_HNF = 1766  bit_HNF/im = 0.500283
m = 80, n = 160, bit_in = 45, t_im = 745.82, t_HNF = 282.98
     t_HNF/im = 0.379421  bit_im = 3530  bit_HNF = 1766  bit_HNF/im = 0.500283
m = 10, n = 20, bit_in = 40, t_im = 0.06, t_HNF = 0.05
     t_HNF/im = 0.833333  bit_im = 809  bit_HNF = 405  bit_HNF/im = 0.500618
m = 10, n = 20, bit_in = 83, t_im = 0.15, t_HNF = 0.09
     t_HNF/im = 0.6  bit_im = 809  bit_HNF = 405  bit_HNF/im = 0.500618
m = 20, n = 40, bit_in = 40, t_im = 1.3, t_HNF = 0.75
     t_HNF/im = 0.576923  bit_im = 2456  bit_HNF = 822  bit_HNF/im = 0.334691
m = 20, n = 40, bit_in = 84, t_im = 3.52, t_HNF = 1.55
     t_HNF/im = 0.440341  bit_im = 2457  bit_HNF = 822  bit_HNF/im = 0.334554
m = 40, n = 80, bit_in = 40, t_im = 30.16, t_HNF = 13.91
     t_HNF/im = 0.461207  bit_im = 6640  bit_HNF = 1664  bit_HNF/im = 0.250602
m = 40, n = 80, bit_in = 84, t_im = 88.5, t_HNF = 31.57
     t_HNF/im = 0.356723  bit_im = 6640  bit_HNF = 1664  bit_HNF/im = 0.250602
m = 35, n = 40, bit_in = 10, t_im = 0.52, t_HNF = 1.01
     t_HNF/im = 1.94231  bit_im = 1594  bit_HNF = 400  bit_HNF/im = 0.250941
m = 35, n = 40, bit_in = 24, t_im = 1.45, t_HNF = 2.22
     t_HNF/im = 1.53103  bit_im = 1594  bit_HNF = 400  bit_HNF/im = 0.250941
m = 75, n = 80, bit_in = 10, t_im = 12.76, t_HNF = 26.5
     t_HNF/im = 2.0768  bit_im = 3581  bit_HNF = 898  bit_HNF/im = 0.250768
m = 75, n = 80, bit_in = 25, t_im = 39.95, t_HNF = 67.84
     t_HNF/im = 1.69812  bit_im = 3581  bit_HNF = 898  bit_HNF/im = 0.250768
m = 5, n = 200, bit_in = 40, t_im = 0.27, t_HNF = 7.07
     t_HNF/im = 26.1852  bit_im = 785  bit_HNF = 201  bit_HNF/im = 0.256051
m = 5, n = 200, bit_in = 82, t_im = 0.4, t_HNF = 7.12
     t_HNF/im = 17.8  bit_im = 786  bit_HNF = 201  bit_HNF/im = 0.255725
m = 5, n = 200, bit_in = 80, t_im = 0.43, t_HNF = 7.15
     t_HNF/im = 16.6279  bit_im = 1199  bit_HNF = 401  bit_HNF/im = 0.334445
m = 5, n = 200, bit_in = 162, t_im = 0.91, t_HNF = 7.19
     t_HNF/im = 7.9011  bit_im = 1199  bit_HNF = 401  bit_HNF/im = 0.334445
bye!