Function ipp_sys::ippiColorToGray_8u_C3C1R

pub unsafe extern "C" fn ippiColorToGray_8u_C3C1R(
    pSrc: *const u8,
    srcStep: i32,
    pDst: *mut u8,
    dstStep: i32,
    roiSize: IppiSize,
    coeffs: *const f32
) -> i32