File: to_f_spec.rb

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require File.expand_path('../../../spec_helper', __FILE__)

describe "Bignum#to_f" do
  it "returns self converted to a Float" do
    bignum_value(0x4000_0aa0_0bb0_0000).to_f.should eql(13_835_069_737_789_292_544.00)
    bignum_value(0x8000_0000_0000_0ccc).to_f.should eql(18_446_744_073_709_555_712.00)
    (-bignum_value(99)).to_f.should eql(-9_223_372_036_854_775_808.00)
  end

  it "converts number close to Float::MAX without exceeding MAX or producing NaN" do
    (10**308).to_f.should == 10.0 ** 308
  end
end