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* to you under the Apache License, Version 2.0 (the
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* Unless required by applicable law or agreed to in writing,
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#include <memory>
#include <functional>
#include <climits>
#include "theta_sketch.hpp"
#include "common_defs.hpp"
namespace datasketches {
* author Alexander Saydakov
* author Lee Rhodes
* author Kevin Lang
template<typename A>
class theta_intersection_alloc {
* Creates an instance of the intersection with a given hash seed.
* @param seed hash seed
explicit theta_intersection_alloc(uint64_t seed = DEFAULT_SEED);
* Updates the intersection with a given sketch.
* The intersection can be viewed as starting from the "universe" set, and every update
* can reduce the current set to leave the overlapping subset only.
* @param sketch represents input set for the intersection
void update(const theta_sketch_alloc<A>& sketch);
* Produces a copy of the current state of the intersection.
* If update() was not called, the state is the infinite "universe",
* which is considered an undefined state, and throws an exception.
* @param ordered optional flag to specify if ordered sketch should be produced
* @returnthe result of the intersection
compact_theta_sketch_alloc<A> get_result(bool ordered = true) const;
* Returns true if the state of the intersection is defined (not infinite "universe").
* @return true if the state is valid
bool has_result() const;
typedef typename std::allocator_traits<A>::template rebind_alloc<uint64_t> AllocU64;
bool is_valid_;
bool is_empty_;
uint64_t theta_;
uint8_t lg_size_;
vector_u64<A> keys_;
uint32_t num_keys_;
uint16_t seed_hash_;
// alias with default allocator for convenience
typedef theta_intersection_alloc<std::allocator<void>> theta_intersection;
} /* namespace datasketches */
#include "theta_intersection_impl.hpp"
# endif