Function ippiFilterGaussianGetBufferSize_L 

pub unsafe extern "C" fn ippiFilterGaussianGetBufferSize_L(
    maxRoiSize: IppiSizeL,
    kernelSize: i32,
    dataType: i32,
    borderType: u32,
    numChannels: i32,
    pBufferSize: *mut i64,
) -> i32