#373 default floating-point formats differ from IDL

[Sylwester Arabas]

As mentioned in an e-mail from Alain:

IDL> for ii=0, 10 do print, ii, 1.D/10.^ii
0 1.0000000
1 0.10000000
2 0.010000000
3 0.0010000000
4 0.00010000000
5 1.0000000e-05
6 1.0000000e-06
7 1.0000000e-07
8 1.0000000e-08
9 1.0000000e-09
10 1.0000000e-10

GDL> for ii=0, 10 do print, ii, 1./10.^ii
0 1.00000
1 0.10000
2 0.01000
3 0.00100
4 0.00010
5 0.00001
6 1.00000e-06
7 1.00000e-07
8 1.00000e-08
9 1.00000e-09
10 1.00000e-10

[Sylwester Arabas]

Works as of 0.9.8