pub unsafe extern "C" fn igraph_matrix_int_maxdifference(
m1: *const igraph_matrix_int_t,
m2: *const igraph_matrix_int_t,
) -> igraph_real_tpub unsafe extern "C" fn igraph_matrix_int_maxdifference(
m1: *const igraph_matrix_int_t,
m2: *const igraph_matrix_int_t,
) -> igraph_real_t