Function ippiThresholdAdaptiveGaussInit 

pub unsafe extern "C" fn ippiThresholdAdaptiveGaussInit(
    roiSize: IppiSize,
    maskSize: IppiSize,
    dataType: Type,
    numChannels: c_int,
    sigma: Ipp32f,
    pSpec: *mut IppiThresholdAdaptiveSpec,
) -> IppStatus