Function ippiAlphaCompC_16u_C4R 

pub unsafe extern "C" fn ippiAlphaCompC_16u_C4R(
    pSrc1: *const u16,
    src1Step: i32,
    alpha1: u16,
    pSrc2: *const u16,
    src2Step: i32,
    alpha2: u16,
    pDst: *mut u16,
    dstStep: i32,
    roiSize: IppiSize,
    alphaType: u32,
) -> i32