fdiv for ruby 1.8.6

fdiv-186_spec.rb

unless 0.respond_to?(:fdiv)
  class Numeric
    def fdiv(numeric)
      raise TypeError, "#{numeric.inspect} can't be coerced into a Numeric type" unless numeric.respond_to?(:to_f)
      self.to_f / numeric
    end
  end
end

describe Numeric do

  it "divides floats with fdiv" do
    3.0.fdiv(3).should be_close(1.0, 0.001)
  end


  it "divides ints with fdiv" do
    3.fdiv(3).should be_close(1.0, 0.001)
  end

  it "raises a TypeError if you try to fdiv a non-numeric object" do
    lambda {3.fdiv(:nan)}.should raise_error(TypeError, /:nan can't be coerced into (Float|Fixnum|a Numeric type)/)
  end
end