From: Jeff Schwab <jeff@...>
Date: 2009-04-10T23:30:02+09:00
Subject: Re: Float.finite ?

ITYM Float#finite?

Aldric Giacomoni wrote:
> How does one use .finite? effectively?

> I tried with (1.0/3).finite? => true...
> I tried with BigDecimal.. Still true. I'm pretty sure these numbers aren't
> finite.

They are finite.

> How do I make this work?

#finite? doesn't tell you whether the decimal (or any other) 
representation of a number requires finite space.  #finite? tells you 
only whether the value is finite, i.e. not infinite.

irb(main):002:0> 1.0/3.0
=> 0.333333333333333
irb(main):003:0> _.finite?
=> true
irb(main):004:0> 1.0/0
=> Infinity
irb(main):005:0> _.finite?
=> false
irb(main):006:0>