Float built-in type Float built-in type. Cast a [bool] value to a floating point value, [code]float(true)[/code] will be equal to 1.0 and [code]float(false)[/code] will be equal to 0.0. Cast an [int] value to a floating point value, [code]float(1)[/code] will be equal to 1.0. Cast a [String] value to a floating point value. This method accepts float value strings like [code]"1.23"[/code] and exponential notation strings for its parameter so calling [code]float("1e3")[/code] will return 1000.0 and calling [code]float("1e-3")[/code] will return 0.001.