lustre>./shotgun/rubinius                                                                              
sirb(eval):000> Float(90000000000000000000000)
=> 9.0e+22
sirb(eval):001> Float(90000000000000000000000)
=> 9.0e+22
sirb(eval):002> Float(90000000000000000000000)
=> 9.0e+22
sirb(eval):003> 90000000000000000000000000.to_f
=> 9.0e+25
sirb(eval):004> 90000000000000000000000000.to_f
=> 9.0e+25