activemodel/lib/active_model/type/float.rb


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module ActiveModel
  module Type
    class Float < Value # :nodoc:
      include Helpers::Numeric

      def type
        :float
      end

      alias serialize cast

      private

      def cast_value(value)
        case value
        when ::Float then value
        when "Infinity" then ::Float::INFINITY
        when "-Infinity" then -::Float::INFINITY
        when "NaN" then ::Float::NAN
        else value.to_f
        end
      end
    end
  end
end