pub unsafe extern "C" fn gr_poly_interpolate(
poly: *mut gr_poly_struct,
xs: *const gr_vec_struct,
ys: *const gr_vec_struct,
ctx: *mut gr_ctx_struct,
) -> c_intpub unsafe extern "C" fn gr_poly_interpolate(
poly: *mut gr_poly_struct,
xs: *const gr_vec_struct,
ys: *const gr_vec_struct,
ctx: *mut gr_ctx_struct,
) -> c_int