Function SoapySDRDevice_getNativeDeviceHandle 

pub unsafe extern "C" fn SoapySDRDevice_getNativeDeviceHandle(
    device: *const SoapySDRDevice,
) -> *mut c_void

A handle to the native device used by the driver.

The implementation may return a null value if it does not support or does not wish to provide access to the native handle. \param device a pointer to a device instance \return a handle to the native device or null