$ perl -le 'for ($i = 0; $i < 1.01; $i += 0.05) { printf "%.20f\t%.1f \n",$i, $i}'
0.00000000000000000000  0.0
0.05000000000000000278  0.1
0.10000000000000000555  0.1
0.15000000000000002220  0.2
0.20000000000000001110  0.2
0.25000000000000000000  0.2
0.29999999999999998890  0.3
0.34999999999999997780  0.3
0.39999999999999996669  0.4
0.44999999999999995559  0.4
0.49999999999999994449  0.5
0.54999999999999993339  0.5
0.59999999999999997780  0.6
0.65000000000000002220  0.7
0.70000000000000006661  0.7
0.75000000000000011102  0.8
0.80000000000000015543  0.8
0.85000000000000019984  0.9
0.90000000000000024425  0.9
0.95000000000000028866  1.0
1.00000000000000022204  1.0