pub unsafe extern "C" fn GEPolyline(
n: i32,
x: *mut f64,
y: *mut f64,
gc: *mut R_GE_gcontext,
dd: *mut _GEDevDesc,
)
pub unsafe extern "C" fn GEPolyline(
n: i32,
x: *mut f64,
y: *mut f64,
gc: *mut R_GE_gcontext,
dd: *mut _GEDevDesc,
)