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path: root/spec/rubyspec/core/float/nan_spec.rb
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require File.expand_path('../../../spec_helper', __FILE__)

describe "Float#nan?" do
  it "returns true if self is not a valid IEEE floating-point number" do
    0.0.nan?.should == false
    -1.5.nan?.should == false
    nan_value.nan?.should == true
  end
end