2. Data structures

2.1. igraph_arpack_options_t — Options for ARPACK
2.2. igraph_arpack_storage_t — Storage for ARPACK
2.3. igraph_arpack_function_t — Type of the ARPACK callback function
2.4. igraph_arpack_options_init — Initialize ARPACK options
2.5. igraph_arpack_storage_init — Initialize ARPACK storage
2.6. igraph_arpack_storage_destroy — Deallocate ARPACK storage