Modified Bessel Function I0

    x       actual     bessi0(x) 
  0.00    1.0000000    1.0000000
  0.20    1.0100250    1.0100250
  0.40    1.0404018    1.0404018
  0.60    1.0920453    1.0920453
  0.80    1.1665149    1.1665149
  1.00    1.2660658    1.2660658
  1.20    1.3937256    1.3937256
  1.40    1.5533952    1.5533950
  1.60    1.7499807    1.7499807
  1.80    1.9895593    1.9895593
  2.00    2.2795851    2.2795854
  2.50    3.2898390    3.2898393
  3.00    4.8807926    4.8807926
  3.50    7.3782034    7.3782034
  4.00   11.3019218   11.3019218
  4.50   17.4811726   17.4811726
  5.00   27.2398701   27.2398720
  6.00   67.2344055   67.2344055
  8.00  427.5641174  427.5641174
 10.00 2815.7167969 2815.7165527