Function leptonica_sys::convertRGBToHSV

pub unsafe extern "C" fn convertRGBToHSV(
    rval: l_int32, 
    gval: l_int32, 
    bval: l_int32, 
    phval: *mut l_int32, 
    psval: *mut l_int32, 
    pvval: *mut l_int32
) -> l_ok