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