From: "Bartosz Dziewoński" <matma.rex@...>
Date: 2012-12-10T23:22:51+09:00
Subject: Re: Binary Fixed-Point in Ruby? (Improved FixedPt?)

There is BigDecimal in the standard library.

irb(main):011:0> require 'bigdecimal'
=> true
irb(main):012:0> BigDecimal
=> BigDecimal
irb(main):014:0> BigDecimal.new '123'
=> #<BigDecimal:13c0950,'0.123E3',9(18)>

http://www.ruby-doc.org/stdlib-1.9.3/libdoc/bigdecimal/rdoc/index.html

-- Matma Rex