Function leptonica_sys::pixMakeRangeMaskHV

pub unsafe extern "C" fn pixMakeRangeMaskHV(
    pixs: *mut PIX, 
    huecenter: l_int32, 
    huehw: l_int32, 
    valcenter: l_int32, 
    valhw: l_int32, 
    regionflag: l_int32
) -> *mut PIX