Function geos_sys::GEOSOrientationIndex_r

pub unsafe extern "C" fn GEOSOrientationIndex_r(
    handle: GEOSContextHandle_t, 
    ax: c_double, 
    ay: c_double, 
    bx: c_double, 
    by: c_double, 
    px: c_double, 
    py: c_double
) -> c_int