pub unsafe extern "C" fn igraph_layout_lgl(
graph: *const igraph_t,
res: *mut igraph_matrix_t,
maxiter: igraph_int_t,
maxdelta: igraph_real_t,
area: igraph_real_t,
coolexp: igraph_real_t,
repulserad: igraph_real_t,
cellsize: igraph_real_t,
root: igraph_int_t,
) -> igraph_error_t