_aggregation_rng aggstate_read aggstate_set_extra aggstate_write gsl_random48 random_level set_aggregation_context skiplist_alloc skiplist_elmpos skiplist_free skiplist_headval skiplist_make skiplist_splice skiplist_values tagg_deserialize tagg_serialize unset_aggregation_context

_aggregation_rng gsl_rng* _aggregation_rng = NULL