irb(main):084:0> (-1.0/0.0)
=> -Infinity
irb(main):086:0> (1.0/0.0)
=> Infinity

but

irb(main):087:0> Infinity
NameError: uninitialized constant Infinity
        from (irb):87
        from :0

is it possible to directly access/create a float representing positive
or negative infinity?

Thanks,

Hadley