Function SoapySDRDevice_setFrequencyCorrection 

pub unsafe extern "C" fn SoapySDRDevice_setFrequencyCorrection(
    device: *mut SoapySDRDevice,
    direction: c_int,
    channel: usize,
    value: f64,
) -> c_int

Fine tune the frontend frequency correction.

\param device a pointer to a device instance \param direction the channel direction RX or TX \param channel an available channel on the device \param value the correction in PPM \return an error code or 0 for success