Function leptonica_sys::getOctcubeIndexFromRGB

pub unsafe extern "C" fn getOctcubeIndexFromRGB(
    rval: l_int32, 
    gval: l_int32, 
    bval: l_int32, 
    rtab: *mut l_uint32, 
    gtab: *mut l_uint32, 
    btab: *mut l_uint32, 
    pindex: *mut l_uint32
)