Function veml6030::convert_raw_als_to_lux

pub fn convert_raw_als_to_lux(
    it: IntegrationTime, 
    gain: Gain, 
    raw_als: u16
) -> f32

Calculate lux value for a raw ALS measurement.

For values higher than 1000 lx and 1/4 or 1/8 gain, the following compensation formula is applied: lux = 6.0135e-13*(lux^4) - 9.3924e-9*(lux^3) + 8.1488e-5*(lux^2) + 1.0023*lux